/* =================================
   1. GLOBAL STYES & ELEGANT UI (COMPACT)
   ================================= */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    /* Enhanced Color Palette */
    --primary-bg: #f0f4f8; 
    --surface-bg: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.65); /* For Glassmorphism */
    --header-bg:rgba(100, 165, 209, 0.338);
    
    --text-primary: #0f172a; /* Deeper Slate 900 */
    --text-secondary: #475569; /* Slate 600 */
    --text-tertiary: #94a3b8; /* Slate 400 */
    
    --border-color: #e2e8f0; /* Slate 200 */
    --border-hover: #93c5fd; /* Blue 300 */
    
    /* Vibrant Accent Palette */
    --accent-primary: #38bdf8; /* Light Blue 400 */
    --accent-primary-dark: #0ea5e9; /* Sky 500 */
    --accent-primary-light: #f0f9ff; /* Sky 50 */
    
    --success: #10b981; /* Emerald 500 */
    --danger: #f43f5e;  /* Rose 500 */
    --warning: #f59e0b; /* Amber 500 */
    --info: #818cf8;    /* Indigo 400 */
    --teal: #2dd4bf;    /* Teal 400 */
    --sales-color: #60a5fa; /* Blue 400 */
    --payment-color: #a855f7; /* Purple 500 */
    
    /* Sophisticated Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.08);

    --border-radius-lg: 12px; /* Slightly smaller radius */
    --border-radius-md: 8px;
    --transition-speed: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base animation keyframes */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes modal-pop-in {
    from { opacity: 0; transform: translateY(10px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.5; /* Tighter line-height */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* NEW: Prevent background scroll when a modal is open */
body.modal-open {
    overflow: hidden;
}

/* Decorative Background Element */
.main-background {
    position: fixed;
    top: -20%; right: -20%;
    width: 600px;
    height: 600px;
    background-image: linear-gradient(135deg, var(--accent-primary) 0%, var(--info) 100%);
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.3;
    z-index: -1;
}


.app-container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 1.5rem; /* Reduced padding */
}

/* =================================
   LOGIN PAGE STYLES
   ================================= */
#login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
    animation: fadeIn 0.5s ease-out;
}

.login-container {
    width: 100%;
    max-width: 400px;
    background: var(--glass-bg);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
}
.login-header p {
    color: var(--text-secondary);
    margin: 0 0 2rem 0;
}

#login-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

#login-error-message {
    color: var(--danger);
    background-color: rgba(244, 63, 94, 0.1);
    border: 1px solid rgba(244, 63, 94, 0.2);
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    display: none; /* Hidden by default */
}
#login-error-message.visible {
    display: block;
}

.input-group input {
    width: 100%;
    font-size: 1rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: rgba(255, 255, 255, 0.8);
    transition: all var(--transition-speed);
}
.input-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--accent-primary-light);
    background-color: white;
}

#login-button {
    padding: 0.9rem;
    border: none;
    border-radius: var(--border-radius-md);
    background-image: linear-gradient(to right, var(--accent-primary-dark) 0%, var(--accent-primary) 50%, var(--accent-primary-dark) 100%);
    background-size: 200% auto;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
}
#login-button:hover { 
    background-position: right center; 
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
#login-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}


/* =================================
   2. HEADER (COMPACT)
   ================================= */
header {
    background: var(--header-bg);
    padding: 1rem 1.5rem; /* Reduced padding */
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-image: linear-gradient(to right, var(--accent-primary), var(--info)) 1;
    border-width: 0 0 4px 0;
    border-style: solid;
    position: sticky;
    top: 0;
    z-index: 900;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.header-title-container { 
    display: flex; 
    align-items: center; 
    gap: 1rem; 
}

.company-details {
    display: flex;
    flex-direction: column;
}

header h1 { 
    margin: 0; 
    font-size: 2.8rem; 
    font-weight: 700; 
    color: var(--text-primary); 
    line-height: 1; 
}

.company-selector-dropdown {
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0.4rem 0.8rem;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    max-width: 350px;
    cursor: pointer;
    transition: all var(--transition-speed);
}
.company-selector-dropdown:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-light);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.header-actions button {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--text-secondary); font-size: 1.25rem;
    width: 44px; height: 44px;
    border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    cursor: pointer; transition: all var(--transition-speed);
}
.header-actions button:hover {
    background: white; border-color: var(--accent-primary-dark);
    color: var(--accent-primary-dark); transform: translateY(-3px) scale(1.1);
    box-shadow: var(--shadow-md);
}

#header-date-filters {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(255, 255, 255, 0.4);
    padding: 0.4rem 0.4rem 0.4rem 0.6rem;
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

#header-date-filters label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
}

#header-date-filters input[type="date"] {
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0.2rem 0.4rem;
    font-family: inherit;
    color: var(--text-secondary);
    width: 135px;
}

#header-date-filters input[type="date"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    opacity: 0.6;
}
#header-date-filters input[type="date"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

#apply-date-btn {
    padding: 0.25rem 0.75rem;
    border: none;
    background-color: var(--accent-primary);
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-speed);
    width: auto;
    height: auto;
}

#apply-date-btn:hover {
    background-color: var(--accent-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    color: white;
}


/* =================================
   3. SUMMARY CARDS (COMPACT)
   ================================= */
#summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); 
    gap: 1rem; /* Reduced gap */
    padding-bottom: 1.5rem; /* Reduced padding */
}

.card {
    background-color: var(--surface-bg);
    padding: 1rem; /* Reduced padding */
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    position: relative; overflow: hidden; 
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
    animation: fadeIn 0.5s var(--transition-speed) backwards;
    box-shadow: var(--shadow-sm);
    container-type: inline-size;
}

.card:before {
    content: ''; position: absolute; top: 0; left: 0;
    width: 100%; height: 4px; /* Thinner top bar */
    background-color: var(--border-color);
    transition: background-color var(--transition-speed);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card.clickable-card:hover { border-color: var(--border-hover); }

.card h3 {
    margin: 0.25rem 0 0.1rem 0; /* Reduced margin */
    font-size: 0.85rem; color: var(--text-secondary); font-weight: 500;
}
.card .amount {
    font-weight: 600; font-size: clamp(1rem, 9cqi, 1.6rem); 
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    display: block; margin-top: 0.1rem; /* Reduced margin */
}

.card.receivables:before, .card.receivables .amount { color: var(--success); }
.card.payables:before, .card.payables .amount { color: var(--danger); }
.card.bank:before, .card.bank .amount { color: var(--accent-primary-dark); }
.card.cash:before, .card.cash .amount { color: var(--teal); }
.card.sales:before, .card.sales .amount { color: var(--sales-color); }
.card.purchase:before, .card.purchase .amount { color: var(--warning); }
.card.receipt:before, .card.receipt .amount { color: var(--info); }
.card.payment:before, .card.payment .amount { color: var(--payment-color); }
.card.expenses:before, .card.expenses .amount { color: #be123c; } /* Rose 700 */


/* Animation Delays */
.card:nth-child(1) { animation-delay: 0.05s; } .card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.15s; } .card:nth-child(4) { animation-delay: 0.2s; }
.card:nth-child(5) { animation-delay: 0.25s; } .card:nth-child(6) { animation-delay: 0.3s; }
.card:nth-child(7) { animation-delay: 0.35s; } .card:nth-child(8) { animation-delay: 0.4s; }

/* =================================
   4. MAIN GRID & SECTIONS (COMPACT)
   ================================= */
.list-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem; /* Reduced gap */
    padding-bottom: 1.5rem; /* Reduced padding */
}

.dashboard-section {
    background-color: var(--surface-bg);
    padding: 1rem 1.25rem 1.25rem; /* Reduced padding */
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    display: flex; flex-direction: column;
    box-shadow: var(--shadow-sm);
    animation: fadeIn 0.6s var(--transition-speed) backwards;
    transition: all var(--transition-speed);
}
.dashboard-section:hover { box-shadow: var(--shadow-md); border-color: var(--border-hover); }

.dashboard-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
}

.dashboard-section-header h2,
.dashboard-section > h2 {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 600;
}

.dashboard-section > h2 {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
}


#voucher-filter-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    flex-wrap: wrap;
}

#voucher-filter-controls .date-filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#voucher-filter-controls .date-filter-group label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
}

#voucher-filter-controls input[type="date"] {
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0.4rem 0.5rem;
    font-family: inherit;
    color: var(--text-secondary);
}

#voucher-apply-filter-btn {
    padding: 0.4rem 0.8rem;
    border: none;
    background-color: var(--accent-primary);
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-speed);
}
#voucher-apply-filter-btn:hover {
    background-color: var(--accent-primary-dark);
}


/* =================================
   5. FILTERS & LISTS (COMPACT)
   ================================= */
.search-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed);
}
.search-toggle-btn:hover {
    background-color: var(--primary-bg);
}
.search-toggle-btn svg {
    width: 18px;
    height: 18px;
    stroke: var(--text-secondary);
}

.filter-container {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, opacity 0.4s ease-out, margin-bottom 0.4s ease-out;
    margin-bottom: 0;
}
.filter-container.visible {
    max-height: 60px; /* Ample height for the input */
    opacity: 1;
    margin-bottom: 0.75rem;
}
   
.filter-input {
    width: 100%; padding: 0.7rem 0.9rem; /* Reduced padding */
    border-radius: var(--border-radius-md); border: 1px solid var(--border-color);
    font-size: 0.9rem; transition: all var(--transition-speed);
    background-color: var(--primary-bg);
}
.filter-input:focus { 
    outline: none; border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-light); background-color: white;
}

.list-header {
    display: flex; justify-content: space-between; font-weight: 600;
    padding: 0.4rem 0.75rem; font-size: 0.75rem; color: var(--text-secondary); /* Reduced padding/size */
    border-bottom: 2px solid var(--border-color); text-transform: uppercase;
    letter-spacing: 0.05em;
}

.list-grid ul, .modal-content ul {
    list-style: none; padding: 0; margin: 0;
    overflow-y: auto; max-height: 350px; /* Reduced max-height */
}
.modal-content ul { max-height: 60vh; }

.list-grid ul li, .modal-content ul li {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.7rem 0.75rem; border-bottom: 1px solid var(--border-color); /* Reduced padding */
    transition: background-color var(--transition-speed), transform 0.2s ease-out;
    font-size: 0.9rem;
}
.list-grid ul li:last-child { border-bottom: none; }

#group-balance-ul li, .clickable-ledger { cursor: pointer; }
#group-balance-ul li:hover, .clickable-ledger:hover { 
    background-color: var(--accent-primary-light); 
    color: var(--accent-primary-dark);
}

.amount.dr { color: var(--danger); font-weight: 500; }
.amount.cr { color: var(--success); font-weight: 500; }

.list-header.three-column, ul.three-column li {
    display: grid; grid-template-columns: 2fr 1fr 1fr;
    gap: 1rem; align-items: center;
}
ul.three-column li span:nth-of-type(2), ul.three-column li span:nth-of-type(3) { text-align: right; }
.list-header.three-column span:nth-of-type(2), .list-header.three-column span:nth-of-type(3) { text-align: right; }

/* =================================
   6. MODALS (COMPACT)
   ================================= */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    display: flex; justify-content: center; align-items: center;
    z-index: 1000; opacity: 0; visibility: hidden;
    transition: opacity var(--transition-speed), visibility var(--transition-speed);
}
.modal-overlay.visible { opacity: 1; visibility: visible; }
.modal-overlay.visible .modal-content { animation: modal-pop-in 0.4s var(--transition-speed) backwards; }

.modal-content {
    background: var(--glass-bg); border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem; border-radius: var(--border-radius-lg); /* Reduced padding */
    width: 95%; max-width: 600px; position: relative; 
    box-shadow: var(--shadow-lg); overflow-y: auto; max-height: 90vh;
}
.modal-content.large { max-width: 900px; }
.modal-content.extra-large { max-width: 1400px; padding: 1.25rem; }

.modal-header-container {
    display: flex; justify-content: space-between;
    align-items: center; margin-bottom: 1rem; gap: 1rem; /* Reduced margin */
}

#voucher-search-input {
    padding: 0.5rem 0.75rem;
    flex-grow: 1;
    min-width: 200px;
    margin-bottom: 0; /* Override default filter-input margin */
}

.modal-content h2 { margin: 0; font-size: 1.5rem; color: var(--text-primary); }
.modal-content p { color: var(--text-secondary); margin-top: 0; margin-bottom: 1.5rem;}

.modal-content .close-btn {
    position: absolute; top: 1rem; right: 1rem;
    font-size: 28px; color: var(--text-tertiary); cursor: pointer;
    border: none; background: none; line-height: 1;
    transition: color var(--transition-speed), transform 0.2s ease-out;
}
.modal-content .close-btn:hover { color: var(--danger); transform: rotate(90deg) scale(1.1); }

#settings-form { display: flex; flex-direction: column; gap: 1rem; }
#settings-form input {
    font-size: 1rem; padding: 0.8rem; border: 1px solid var(--border-color); /* Reduced padding */
    border-radius: var(--border-radius-md); transition: all var(--transition-speed);
    background-color: rgba(255, 255, 255, 0.8);
}
#settings-form input:focus {
    outline: none; border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--accent-primary-light); background-color: white;
}
#settings-form button {
    padding: 0.8rem; border: none; border-radius: var(--border-radius-md); /* Reduced padding */
    background-image: linear-gradient(to right, var(--accent-primary-dark) 0%, var(--accent-primary) 50%, var(--accent-primary-dark) 100%);
    background-size: 200% auto;
    color: white; font-size: 1rem; font-weight: 600; cursor: pointer;
    transition: all var(--transition-speed);
}
#settings-form button:hover { 
    background-position: right center; transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.state-indicator { text-align: center; padding: 4rem 2rem; color: var(--text-secondary); }
.spinner {
    width: 48px; height: 48px; border: 5px solid var(--accent-primary-light);
    border-top: 5px solid var(--accent-primary-dark);
    border-radius: 50%; animation: spin 1s linear infinite;
    margin: 0 auto 1.25rem;
}
@keyframes spin { to { transform: rotate(360deg); } }
#error-message { color: var(--danger); font-weight: 500; background-color: #fee2e2; padding: 1.25rem; border-radius: var(--border-radius-lg); border-left: 5px solid var(--danger); }

/* ========================================================
   7. VOUCHER STYLES (NEW TABULAR VIEW)
   ======================================================== */
#voucher-list-container {
    max-height: 65vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
}

/* --- Styles for Ledger Statement Table --- */
.voucher-ledger-table-header, .voucher-ledger-table-row {
    display: grid;
    grid-template-columns: 100px 3fr 1.5fr 1fr 1.25fr 1.25fr 1.5fr;
    gap: 1rem;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}
.voucher-ledger-table-header {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    position: sticky;
    top: 0;
    background-color: var(--surface-bg);
    z-index: 10;
}
.voucher-ledger-table-row {
    font-size: 0.9rem;
}
.voucher-ledger-table-row:last-child {
    border-bottom: none;
}
.voucher-ledger-table-row:hover {
    background-color: var(--accent-primary-light);
}
.voucher-ledger-table-header span:nth-child(n+5),
.voucher-ledger-table-row span:nth-child(n+5) {
    text-align: right;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

/* --- Styles for simple Purchase/Sales Voucher List Table --- */
.voucher-list-table-header, .voucher-list-table-row {
    display: grid;
    grid-template-columns: 100px 3fr 1.5fr 1fr 1.5fr; /* 5 Columns */
    gap: 1rem;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}
.voucher-list-table-header {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    position: sticky;
    top: 0;
    background-color: var(--surface-bg);
    z-index: 10;
}
.voucher-list-table-row {
    font-size: 0.9rem;
}
.voucher-list-table-row:last-child {
    border-bottom: none;
}
.voucher-list-table-row:hover {
    background-color: var(--accent-primary-light);
}
.voucher-list-table-header span:last-child,
.voucher-list-table-row span:last-child {
    text-align: right;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

/* --- Footer Styles for both tables --- */
#voucher-total-footer {
    padding: 0.75rem 1rem;
    margin-top: 0.75rem;
    border-top: 2px solid var(--border-color);
    background-color: var(--primary-bg);
    font-weight: 600;
    display: grid;
    gap: 1rem;
}
#voucher-total-footer.voucher-ledger-total-footer {
    grid-template-columns: 100px 3fr 1.5fr 1fr 1.25fr 1.25fr 1.5fr; /* 7 columns for ledger */
}
#voucher-total-footer.voucher-list-total-footer {
    grid-template-columns: 100px 3fr 1.5fr 1fr 1.5fr; /* 5 columns for voucher list */
}

#voucher-total-footer .total-label {
    text-align: right;
    color: var(--text-secondary);
}

#voucher-total-footer.voucher-ledger-total-footer .total-label {
    grid-column: 1 / 5;
    padding-right: 1rem;
}

#voucher-total-footer.voucher-list-total-footer .total-label {
     grid-column: 1 / 4;
}


#voucher-total-footer > span {
    text-align: right;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 1.1rem;
}

/* =================================
   8. RESPONSIVENESS (COMPACT)
   ================================= */
@media (max-width: 1200px) {
    /* No change needed, 2 columns is default */
}
@media (max-width: 992px) {
    .list-grid, #periodic-summary-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .app-container { padding: 0 1rem; }
    header { 
        padding: 1rem; 
        flex-direction: column; 
        align-items: flex-start; 
        gap: 1rem; 
    }
    .header-left {
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .header-actions { 
        width: 100%; 
        justify-content: flex-end; 
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    #header-date-filters {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
        padding: 0.5rem;
    }
    #header-date-filters input[type="date"] {
        width: 100%;
    }
    
    #summary-cards { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
    .card .amount { font-size: clamp(1rem, 7cqi, 1.4rem); }


    .modal-header-container { flex-direction: column; align-items: stretch; gap: 0.75rem; }
    #voucher-filter-controls, #bills-filter-controls { flex-direction: column; align-items: stretch; }
    #voucher-filter-controls .date-filter-group, #bills-filter-controls .date-filter-group { justify-content: space-between; }
    #voucher-filter-controls .date-filter-group input[type="date"], #bills-filter-controls .date-filter-group input[type="date"] { width: 38%; }

    .modal-content { padding: 1.5rem 1rem; }
    .modal-content.extra-large {
        width: 98%;
        padding: 1rem 0.5rem;
    }
    
    #voucher-list-container, #bills-list-container {
        overflow-x: auto;
    }

    .voucher-ledger-table-header, .voucher-ledger-table-row,
    .voucher-list-table-header, .voucher-list-table-row {
        min-width: 800px;
    }

    .bills-table-header, .party-details-container .detail-row {
        min-width: 900px;
    }

}

@media (max-width: 480px) {
    #summary-cards { grid-template-columns: 1fr 1fr; }
    header h1 { font-size: 2.2rem; }
}


/* =================================
   9. BILLS RECEIVABLE MODAL STYLES
   ================================= */
#bills-filter-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    width: 100%;
}
#bills-filter-controls #bill-search-input {
    flex-grow: 1;
    min-width: 200px;
}
#bills-filter-controls .date-filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
#bills-filter-controls label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}
#bills-filter-controls input[type="date"] {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--primary-bg);
    color: var(--text-secondary);
}
#bills-filter-controls button {
    background-color: var(--accent-primary);
    color: white;
    border: none;
    padding: 0.6rem 1rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-speed);
}
#bills-filter-controls button:hover {
    background-color: var(--accent-primary-dark);
}

#bills-list-container {
    max-height: 65vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
}

.bills-table-header {
    display: grid;
    gap: 1rem;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    position: sticky;
    top: 0;
    background-color: var(--surface-bg);
    z-index: 10;
}
.bills-table-header.party-summary-header {
    grid-template-columns: 3fr 1fr 1fr;
}
.bills-table-header.party-summary-header span:nth-child(n+2) {
    text-align: right;
}

#bills-receivable-container .party-summary-row {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr;
    gap: 1rem;
    padding: 0.85rem 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-speed);
    border-bottom: 1px solid var(--border-color);
}
#bills-receivable-container .party-summary-row:hover {
    background-color: var(--accent-primary-light);
}

#bills-receivable-container .party-summary-row span:nth-child(n+2) {
    text-align: right;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
#bills-receivable-container .party-summary-row .caret-icon {
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-right: 0.5rem;
    transition: transform 0.3s ease;
    vertical-align: -3px;
}
#bills-receivable-container .party-summary-row.expanded .caret-icon {
    transform: rotate(90deg);
}


.party-details-container {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-in-out;
    background-color: #f8fafc; /* slightly different bg for details */
    border-bottom: 1px solid var(--border-color);
}
.party-details-container.expanded {
    max-height: 600px; /* Adjust as needed */
}

.party-details-container .details-header,
.party-details-container .detail-row {
    display: grid;
    grid-template-columns: 2.5fr 1fr 1.5fr 1fr 0.8fr 1.2fr;
    gap: 1rem;
    align-items: center;
    padding: 0.6rem 1rem 0.6rem 2.5rem; /* Indent details */
    font-size: 0.85rem;
    border-bottom: 1px solid var(--border-color);
}
.party-details-container .detail-row:last-child {
    border-bottom: none;
}
.party-details-container .details-header {
    font-weight: 500;
    color: var(--text-secondary);
}

.party-details-container span:last-child {
    text-align: right;
}


#bills-total-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 0.75rem 1rem;
    margin-top: 0.75rem;
    border-top: 2px solid var(--border-color);
    background-color: var(--primary-bg);
    gap: 1rem;
}

#bills-total-label {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-secondary);
}

#bills-total-amount {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-primary);
}
/* --- NEW: Registration & Auth Links --- */
.auth-links-footer {
    padding-top: 1.5rem;
    margin-top: 1.5rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

.auth-links-footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.auth-links-footer a:hover {
    color: var(--accent-primary-dark);
}

.error-display {
    color: var(--danger);
    background-color: rgba(244, 63, 94, 0.1);
    border: 1px solid rgba(244, 63, 94, 0.2);
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    display: none; /* Hidden by default */
    margin-bottom: 1rem;
}
.error-display.visible {
    display: block;
}

#register-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#register-form input {
    font-size: 1rem;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-speed);
    background-color: rgba(255, 255, 255, 0.8);
}
#register-form input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--accent-primary-light);
    background-color: white;
}

#register-form button {
    padding: 0.8rem;
    border: none;
    border-radius: var(--border-radius-md);
    background-image: linear-gradient(to right, var(--accent-primary-dark) 0%, var(--accent-primary) 50%, var(--accent-primary-dark) 100%);
    background-size: 200% auto;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
}
#register-form button:hover { 
    background-position: right center;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
#register-form button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* =================================
   10. VOUCHER CREATION MODAL STYLES
   ================================= */

/* Style for the new button in the header */
#add-voucher-btn {
    background: var(--success);
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}
#add-voucher-btn:hover {
    background: #059669; /* Emerald 600 */
    color: white;
    border-color: white;
}

/* General form styling */
#voucher-creation-form .form-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

#voucher-creation-form .form-group {
    display: flex;
    flex-direction: column;
}

#voucher-creation-form label {
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.4rem;
    color: var(--text-secondary);
}

#voucher-creation-form input {
    font-size: 1rem;
    padding: 0.7rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-speed);
}
#voucher-creation-form input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--accent-primary-light);
}

.form-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 1.5rem 0;
}

/* Item Entry Rows */
#item-entry-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
    max-height: 250px;
    overflow-y: auto;
    padding: 0.5rem;
    background-color: var(--primary-bg);
    border-radius: var(--border-radius-md);
}

.item-row {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr 1fr auto;
    gap: 0.75rem;
    align-items: center;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}
.item-row:last-child {
    border-bottom: none;
}
.item-row input {
    padding: 0.5rem; /* Smaller padding for item rows */
}

/* Remove button for item rows */
.remove-item-btn {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-speed);
    padding: 0;
    line-height: 1;
}
.remove-item-btn:hover {
    color: var(--danger);
    transform: scale(1.1);
}

/* Form Actions Footer */
.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
}
#voucher-grand-total {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Generic secondary button style */
.secondary-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--surface-bg);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed);
}
.secondary-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary-dark);
    background-color: var(--accent-primary-light);
}

/* Feedback message styling (can be reused) */
.feedback-display {
    padding: 0.8rem;
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    display: none; /* Hidden by default */
    margin-bottom: 1rem;
    border: 1px solid transparent;
}
.feedback-display.visible {
    display: block;
}
.feedback-display.success {
    color: #065f46; /* Emerald 800 */
    background-color: #d1fae5; /* Emerald 100 */
    border-color: #6ee7b7; /* Emerald 300 */
}
.feedback-display.error {
    color: var(--danger);
    background-color: rgba(244, 63, 94, 0.1);
    border-color: rgba(244, 63, 94, 0.2);
}

/* =================================
   11. VOUCHER DETAIL STYLES
   ================================= */
.voucher-detail-content .detail-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1rem;
    padding: 0.5rem 0.25rem;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--border-color);
}
.voucher-detail-content .detail-row:last-child {
    border-bottom: none;
}

.voucher-detail-content .detail-row span:last-child {
    text-align: right;
}

.voucher-card-header {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 0.5rem;
}

.detail-row.inventory-header {
    font-weight: 500;
    color: var(--text-secondary);
}
.detail-row.inventory-row {
    grid-template-columns: 2fr 1fr 1fr;
}
.detail-row.inventory-row span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
/* Add this at the end of the file, or in a relevant section like Forms */

.input-with-button {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}
.input-with-button input {
    flex-grow: 1; /* Make the input take up available space */
}
#show-create-party-modal-btn {
    flex-shrink: 0; /* Prevent the button from shrinking */
    padding: 0.5rem 0.8rem;
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1;
}

#create-party-form .form-group {
    margin-bottom: 1rem;
}
#create-party-form .form-actions {
    margin-top: 1.5rem;
    display: flex;
    justify-content: flex-end;
}
/* Add this to style.css inside the .header-actions button styling section */
.header-actions a.header-button {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--text-secondary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-speed);
}
.header-actions a.header-button:hover {
    background: white;
    border-color: var(--accent-primary-dark);
    color: var(--accent-primary-dark);
    transform: translateY(-3px) scale(1.1);
    box-shadow: var(--shadow-md);
}

/* =================================
   12. PROGRESS BAR STYLES
   ================================= */
#progress-overlay {
    /* Uses the .state-indicator class for centering */
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.progress-container {
    width: 100%;
    max-width: 500px;
    text-align: center;
}

#progress-text {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.progress-bar-background {
    width: 100%;
    height: 12px;
    background-color: var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

.progress-bar-foreground {
    width: 0%;
    height: 100%;
    background-image: linear-gradient(90deg, var(--accent-primary), var(--info));
    border-radius: 6px;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =================================
   13. PERIODIC SUMMARY TABLE
   ================================= */
#periodic-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    padding: 0 0 1.5rem 0;
}

.periodic-table {
    width: 100%;
    border-collapse: collapse;
}

.periodic-table tbody tr {
    cursor: pointer;
    transition: all 0.2s ease-out;
}
.periodic-table tbody tr:hover {
    background-color: var(--accent-primary-light);
}

.periodic-table th, .periodic-table td {
    padding: 0.85rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.periodic-table thead {
    border-bottom: 2px solid var(--border-color);
}
.periodic-table th {
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-bottom: none;
}

.periodic-table th:last-child,
.periodic-table td:last-child {
    text-align: right;
}

.periodic-table tbody tr:last-child td {
    border-bottom: none;
}

.periodic-table td:first-child {
    color: var(--text-primary);
    font-weight: 500;
}

.periodic-table td:last-child {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-weight: 600;
    color: var(--text-primary);
}