/* Custom Office Style */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --background-color: #f8f9fa;
    --text-color: #212529;
    --card-bg: #ffffff;
    --footer-bg: #ffffff;
    --border-color: #dee2e6;
    --input-bg: #ffffff;
    --input-text: #212529;
}

body.dark-mode {
    --primary-color: #6ea8fe;
    --secondary-color: #adb5bd;
    --background-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --footer-bg: #1e1e1e;
    --border-color: #444;
    --input-bg: #2b2b2b;
    --input-text: #e0e0e0;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    -webkit-tap-highlight-color: transparent; /* Remove tap highlight on mobile */
    transition: background-color 0.3s, color 0.3s;
}

/* Dark Mode Overrides for Bootstrap classes */
body.dark-mode .bg-white {
    background-color: var(--card-bg) !important;
    color: var(--text-color) !important;
}

body.dark-mode .bg-light {
    background-color: #2b2b2b !important;
    color: var(--text-color) !important;
}

body.dark-mode .text-muted {
    color: #adb5bd !important;
}

body.dark-mode h1, 
body.dark-mode h2, 
body.dark-mode h3, 
body.dark-mode h4, 
body.dark-mode h5, 
body.dark-mode h6,
body.dark-mode p,
body.dark-mode span,
body.dark-mode div,
body.dark-mode li {
    color: var(--text-color);
}

body.dark-mode .navbar-light .navbar-nav .nav-link {
    color: var(--text-color);
}

body.dark-mode .navbar-light .navbar-nav .nav-link:hover {
    color: var(--primary-color);
}

body.dark-mode .form-control, 
body.dark-mode .form-select {
    background-color: var(--input-bg);
    color: var(--input-text);
    border-color: var(--border-color);
}

body.dark-mode .form-control:focus,
body.dark-mode .form-select:focus {
    background-color: var(--input-bg);
    color: var(--input-text);
}

body.dark-mode .modal-content {
    background-color: var(--card-bg);
    color: var(--text-color);
}

body.dark-mode .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

body.dark-mode .card {
    background-color: var(--card-bg);
    color: var(--text-color);
}

body.dark-mode .card-body {
    color: var(--text-color);
}

body.dark-mode .navbar-light .navbar-brand {
    color: var(--primary-color) !important;
}

body.dark-mode .mobile-nav {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
}

body.dark-mode .mobile-nav-item {
    color: var(--secondary-color);
}

body.dark-mode .mobile-nav-item.active {
    color: var(--primary-color);
}

/* Ensure icons in dark mode are visible if not colored */
body.dark-mode .text-secondary {
    color: #adb5bd !important;
}

/* Fix for specific text colors that might be hardcoded in Bootstrap */
body.dark-mode .text-dark {
    color: #e0e0e0 !important;
}

body.dark-mode .text-black {
    color: #e0e0e0 !important;
}

/* Fix for btn-outline-dark in dark mode */
body.dark-mode .btn-outline-dark {
    color: #e0e0e0;
    border-color: #e0e0e0;
}

body.dark-mode .btn-outline-dark:hover {
    color: #000;
    background-color: #e0e0e0;
}

/* Fix for alerts in dark mode */
body.dark-mode .alert {
    color: #212529 !important; /* Dark text for alerts to contrast with light background */
}

body.dark-mode .alert .btn-close {
    filter: none; /* Reset filter so close button is visible on light background */
}

.navbar-brand {
    font-weight: bold;
    color: var(--primary-color) !important;
}

.card {
    border: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, background-color 0.3s;
    height: 100%;
    border-radius: 12px; /* Softer corners for app feel */
    background-color: var(--card-bg);
}

.card:hover {
    transform: translateY(-5px);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.tool-section {
    padding: 2rem 0;
}

.partner-link {
    text-decoration: none;
    color: var(--secondary-color);
    transition: color 0.2s;
}

.partner-link:hover {
    color: var(--primary-color);
}

footer {
    background-color: var(--footer-bg) !important;
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: auto;
    transition: background-color 0.3s;
}

/* Utilities specific styles */
.calc-display {
    background: #222;
    color: #fff;
    font-family: 'Courier New', Courier, monospace;
    font-size: 2rem;
    text-align: right;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 10px;
}

.calc-btn {
    width: 100%;
    margin-bottom: 10px;
    border-radius: 8px;
    font-size: 1.2rem;
    padding: 15px 0; /* Larger touch area */
}

#editor-container {
    height: 300px;
    border: 1px solid #ccc;
    background: #fff;
}

/* Mobile App Specific Styles */
@media (max-width: 991px) {
    body {
        padding-bottom: 70px; /* Space for bottom nav */
    }

    .container {
        padding-left: 15px;
        padding-right: 15px;
    }

    .card {
        margin-bottom: 15px;
    }

    /* Mobile Bottom Navigation */
    .mobile-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background-color: var(--card-bg);
        box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
        display: flex;
        justify-content: space-around;
        padding: 10px 0;
        z-index: 1000;
        border-top-left-radius: 15px;
        border-top-right-radius: 15px;
        border-top: 1px solid var(--border-color);
    }

    .mobile-nav-item {
        text-align: center;
        color: var(--secondary-color);
        text-decoration: none;
        font-size: 0.8rem;
        flex: 1;
    }

    .mobile-nav-item i {
        display: block;
        font-size: 1.4rem;
        margin-bottom: 2px;
    }

    .mobile-nav-item.active {
        color: var(--primary-color);
    }
    
    /* Make inputs larger for touch */
    .form-control, .btn {
        min-height: 44px; /* Apple Human Interface Guidelines */
    }
    
    .navbar-brand {
        font-size: 1.5rem;
    }
}

.vintage-calc {
    --calc-case: #3b2b1f;
    --calc-case-hi: #4b3828;
    --calc-case-lo: #241a12;
    --calc-metal: #b79a5b;
    --calc-metal-hi: #d2bb7b;
    --calc-metal-lo: #8c6f34;
    --calc-key: #1c1f22;
    --calc-key-hi: #2a2f34;
    --calc-key-lo: #0f1113;
    --calc-key-text: #f0f2f4;
    --calc-accent: #caa24b;
    --calc-danger: #8c2a2a;
    --calc-equals: #1f6f57;
    --calc-screen: #211a12;
    --calc-screen-hi: #2e2419;
    --calc-screen-text: #f3d38d;
    padding: 14px;
    border-radius: 18px;
    background:
        radial-gradient(120% 90% at 20% 0%, rgba(255,255,255,0.12), rgba(255,255,255,0) 45%),
        linear-gradient(145deg, var(--calc-case-hi), var(--calc-case));
    border: 1px solid rgba(0,0,0,0.25);
    box-shadow:
        0 18px 40px rgba(0,0,0,0.25),
        inset 0 1px 0 rgba(255,255,255,0.08);
}

.vintage-calc-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.vintage-badge {
    font-weight: 700;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    color: rgba(255,255,255,0.78);
    text-transform: uppercase;
}

.vintage-dial {
    width: 56px;
    height: 56px;
    border-radius: 999px;
    background:
        radial-gradient(circle at 35% 30%, rgba(255,255,255,0.45), rgba(255,255,255,0) 40%),
        radial-gradient(circle at 50% 55%, rgba(0,0,0,0.28), rgba(0,0,0,0) 55%),
        linear-gradient(145deg, var(--calc-metal-hi), var(--calc-metal-lo));
    border: 1px solid rgba(0,0,0,0.35);
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.22),
        0 10px 20px rgba(0,0,0,0.22);
    position: relative;
    flex: 0 0 auto;
}

.vintage-dial::before {
    content: "QUARTZ";
    position: absolute;
    left: 50%;
    top: 58%;
    transform: translate(-50%, -50%);
    font-size: 0.55rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    color: rgba(0,0,0,0.62);
}

.vintage-display {
    width: 100%;
    border-radius: 12px;
    padding: 12px 12px;
    border: 1px solid rgba(0,0,0,0.45);
    background:
        radial-gradient(120% 120% at 20% 10%, rgba(255,255,255,0.08), rgba(255,255,255,0) 55%),
        linear-gradient(145deg, var(--calc-screen-hi), var(--calc-screen));
    color: var(--calc-screen-text);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.06),
        inset 0 -10px 30px rgba(0,0,0,0.35);
}

.vintage-display:focus {
    outline: none;
    box-shadow:
        0 0 0 3px rgba(202,162,75,0.25),
        inset 0 1px 0 rgba(255,255,255,0.06),
        inset 0 -10px 30px rgba(0,0,0,0.35);
}

.vintage-keys .btn {
    border: 1px solid rgba(0,0,0,0.55);
    border-radius: 12px;
    background:
        radial-gradient(140% 120% at 25% 15%, rgba(255,255,255,0.12), rgba(255,255,255,0) 55%),
        linear-gradient(145deg, var(--calc-key-hi), var(--calc-key));
    color: var(--calc-key-text);
    box-shadow:
        0 8px 18px rgba(0,0,0,0.25),
        inset 0 1px 0 rgba(255,255,255,0.08);
}

.vintage-keys .btn:active {
    transform: translateY(1px);
    box-shadow:
        0 5px 12px rgba(0,0,0,0.22),
        inset 0 1px 0 rgba(255,255,255,0.08);
}

.vintage-keys .btn.vintage-op {
    border-color: rgba(0,0,0,0.55);
    background:
        radial-gradient(140% 120% at 25% 15%, rgba(255,255,255,0.1), rgba(255,255,255,0) 55%),
        linear-gradient(145deg, #2c2f33, #16181a);
    color: rgba(255,255,255,0.9);
}

.vintage-keys .btn.vintage-equals {
    background:
        radial-gradient(140% 120% at 25% 15%, rgba(255,255,255,0.16), rgba(255,255,255,0) 55%),
        linear-gradient(145deg, #2a8a6e, var(--calc-equals));
    color: #fff;
}

.vintage-keys .btn.vintage-clear {
    background:
        radial-gradient(140% 120% at 25% 15%, rgba(255,255,255,0.12), rgba(255,255,255,0) 55%),
        linear-gradient(145deg, #b03c3c, var(--calc-danger));
    color: #fff;
}

.vintage-keys .btn.vintage-pct {
    background:
        radial-gradient(140% 120% at 25% 15%, rgba(255,255,255,0.12), rgba(255,255,255,0) 55%),
        linear-gradient(145deg, #3a3430, #1f1b18);
    color: rgba(255,255,255,0.92);
}

body.dark-mode .vintage-calc {
    --calc-case: #2a2621;
    --calc-case-hi: #35302a;
    --calc-case-lo: #151310;
    --calc-metal: #8f7a46;
    --calc-metal-hi: #b49a59;
    --calc-metal-lo: #6a562f;
    --calc-screen-text: #f2d78e;
}

#calcModal .modal-dialog {
    max-width: 380px;
}

#calcModal .modal-content {
    border: none;
    background: transparent;
}

#calcModal .modal-body {
    padding: 0;
}

.win-calc {
    background: #1e1e1e;
    color: #fff;
    border-radius: 14px;
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 18px 40px rgba(0,0,0,0.35);
}

.win-calc-topbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 10px 8px;
    background: #171717;
}

.win-calc-title {
    flex: 1;
    font-weight: 600;
    letter-spacing: 0.2px;
    font-size: 1.05rem;
}

.win-calc-actions {
    display: flex;
    gap: 6px;
}

.win-icon-btn {
    width: 36px;
    height: 32px;
    border: 1px solid rgba(255,255,255,0.06);
    background: transparent;
    color: rgba(255,255,255,0.9);
    border-radius: 8px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.win-icon-btn:hover {
    background: rgba(255,255,255,0.06);
}

.win-icon-btn:disabled {
    opacity: 0.45;
    cursor: default;
}

.win-calc-display-area {
    padding: 12px 12px 10px;
    background: #1e1e1e;
}

.win-calc-display-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    min-height: 18px;
}

.win-calc-brand {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.2px;
    color: rgba(255,255,255,0.7);
}

.win-calc-expression {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.55);
    text-align: right;
    padding-right: 2px;
}

.win-calc-display {
    width: 100%;
    border: none;
    background: transparent;
    color: rgba(255,255,255,0.95);
    font-size: 3.2rem;
    font-weight: 600;
    text-align: right;
    padding: 0 2px 2px;
}

.win-calc-display:focus {
    outline: none;
}

.win-calc-memory {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
    padding: 0 12px 10px;
}

.win-calc-keys {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    padding: 0 12px 12px;
}

.win-key {
    border: 1px solid rgba(255,255,255,0.06);
    background: #2a2a2a;
    color: rgba(255,255,255,0.92);
    border-radius: 10px;
    min-height: 52px;
    font-size: 1.05rem;
    font-weight: 600;
}

.win-key:hover {
    background: #303030;
}

.win-key:active {
    transform: translateY(1px);
}

.win-key:disabled {
    opacity: 0.45;
    cursor: default;
}

.win-key-ghost {
    min-height: 36px;
    background: transparent;
    font-weight: 600;
    font-size: 0.9rem;
}

.win-key-ghost:hover {
    background: rgba(255,255,255,0.06);
}

.win-key-digit {
    background: #2d2d2d;
    font-size: 1.2rem;
}

.win-key-op {
    background: #262626;
    font-size: 1.25rem;
}

.win-key-equals {
    background: #1a7bd6;
    border-color: rgba(255,255,255,0.1);
    font-size: 1.35rem;
}

.win-key-equals:hover {
    background: #2084e2;
}

.win-calc-history {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 78%;
    max-width: 300px;
    background: #1b1b1b;
    border-left: 1px solid rgba(255,255,255,0.06);
    transform: translateX(100%);
    transition: transform 0.18s ease-out;
    display: flex;
    flex-direction: column;
    z-index: 5;
}

.win-calc-history.open {
    transform: translateX(0);
}

.win-history-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 10px 8px;
    background: #171717;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.win-history-title {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.2px;
}

.win-history-list {
    padding: 10px;
    overflow: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.win-history-item {
    width: 100%;
    text-align: left;
    border: 1px solid rgba(255,255,255,0.06);
    background: #242424;
    border-radius: 12px;
    padding: 10px 10px;
    color: rgba(255,255,255,0.92);
}

.win-history-item:hover {
    background: #2a2a2a;
}

.win-history-expr {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.55);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.win-history-res {
    font-size: 1.25rem;
    font-weight: 700;
    text-align: right;
    margin-top: 2px;
}

.win-history-empty {
    padding: 8px 2px;
    color: rgba(255,255,255,0.55);
    font-size: 0.9rem;
}

.win-history-footer {
    padding: 10px;
    border-top: 1px solid rgba(255,255,255,0.06);
    background: #171717;
}