/* ============================================
   SAVI'S OSINT TOOLKIT - Command Center Design
   ============================================ */

:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #16161f;
    --bg-card-hover: #1a1a25;
    --bg-input: #1e1e2a;

    --border-default: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --border-focus: rgba(99, 102, 241, 0.5);

    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;

    --accent: #6366f1;
    --accent-hover: #818cf8;
    --accent-muted: rgba(99, 102, 241, 0.15);

    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Utility */
    --white: #fff;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;

    /* Sizing */
    --header-height: 60px;
    --sidebar-width: 320px;
    --max-width: 1400px;
    --border-radius: 12px;
    --border-radius-sm: 8px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ============================================
   RESET & BASE
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Hidden utility - high specificity without !important */
[hidden], .hidden, .hidden[class] { display: none; }

/* ============================================
   LAYOUT
   ============================================ */

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: var(--header-height) var(--space-lg) var(--space-lg);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-lg);
    z-index: 100;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.logo svg {
    color: var(--accent);
}

/* ============================================
   BENTO GRID
   ============================================ */

.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto auto;
    gap: var(--space-lg);
    max-width: var(--max-width);
    margin: var(--space-xl) auto 0;
    width: 100%;
}

/* Card placement */
.card-phone { grid-column: 1; grid-row: 1; }
.card-username { grid-column: 2; grid-row: 1; }
.card-email { grid-column: 3; grid-row: 1; }
.card-ip { grid-column: 1 / span 2; grid-row: 2; }
.card-exif { grid-column: 3; grid-row: 2; }

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    border-color: var(--border-hover);
}

.card:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-muted);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    position: relative;
}

.card-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-muted);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.card-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}

.shortcut-hint {
    width: 24px;
    height: 24px;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
}

.card-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    flex: 1;
}

/* ============================================
   INPUTS
   ============================================ */

.input-group {
    position: relative;
}

.input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: var(--font-sans);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input::placeholder {
    color: var(--text-muted);
}

.input:hover {
    border-color: var(--border-hover);
}

.input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-muted);
}

.input-row {
    display: flex;
    gap: var(--space-sm);
    align-items: stretch;
}

.flex-grow { flex: 1; }

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.625rem 1rem;
    background: transparent;
    border: 1px solid var(--border-default);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:hover {
    background: var(--bg-input);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: white;
}

.btn-warn {
    border-color: var(--warning);
    color: var(--warning);
}

.btn-warn:hover {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--warning);
    color: var(--warning);
}

.btn-small {
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-ghost {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.btn-ghost:hover {
    color: var(--text-primary);
}

.full-width { width: 100%; }

/* Icon buttons */
.icon-btn {
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border-default);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.icon-btn:hover {
    background: var(--bg-input);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.icon-btn-small {
    width: 28px;
    height: 28px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.icon-btn-small:hover {
    background: var(--bg-input);
    color: var(--text-primary);
}

/* Button grid */
.button-grid {
    display: grid;
    gap: var(--space-sm);
}

.button-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.button-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.button-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.button-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }

/* ============================================
   RESULTS BOX
   ============================================ */

.results-box {
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border-default);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.results-content {
    padding: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.7;
    max-height: 200px;
    overflow-y: auto;
}

.results-content .row {
    display: flex;
    gap: var(--space-md);
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--border-default);
}

.results-content .row:last-child {
    border-bottom: none;
}

.results-content .label {
    color: var(--accent);
    min-width: 80px;
    font-weight: 500;
}

.results-content .value {
    color: var(--text-primary);
}

/* ============================================
   DROPZONE
   ============================================ */

.dropzone {
    border: 2px dashed var(--border-default);
    border-radius: var(--border-radius-sm);
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
}

.dropzone:hover,
.dropzone.drag-over {
    border-color: var(--accent);
    background: var(--accent-muted);
    color: var(--text-secondary);
}

.dropzone svg {
    color: var(--text-muted);
    transition: color var(--transition-base);
}

.dropzone:hover svg,
.dropzone.drag-over svg {
    color: var(--accent);
}

.dropzone-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   SIDEBAR
   ============================================ */

.sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-default);
    display: flex;
    flex-direction: column;
    z-index: 200;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
}

.sidebar:not(.hidden) {
    transform: translateX(0);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-default);
}

.sidebar-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md);
}

.sidebar-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--border-default);
    text-align: center;
}

.empty-state {
    color: var(--text-muted);
    text-align: center;
    padding: var(--space-xl);
    font-size: 0.875rem;
}

/* History items */
.history-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.history-item:hover {
    background: var(--bg-input);
}

.history-item .type {
    font-size: 0.75rem;
    color: var(--accent);
    text-transform: uppercase;
    min-width: 60px;
}

.history-item .query {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-item .time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   MODAL
   ============================================ */

.modal {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal.hidden {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow: hidden;
    animation: modal-in 0.2s ease;
}

@keyframes modal-in {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-default);
}

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
}

.shortcut-group {
    margin-bottom: var(--space-lg);
}

.shortcut-group:last-child {
    margin-bottom: 0;
}

.shortcut-group h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.shortcut-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
}

.shortcut-row kbd {
    min-width: 28px;
    padding: 0.25rem 0.5rem;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
}

.shortcut-row span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ============================================
   TOAST
   ============================================ */

#toast-container {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    z-index: 400;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--border-radius-sm);
    padding: var(--space-md) var(--space-lg);
    color: var(--text-primary);
    font-size: 0.875rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    animation: toast-in 0.3s ease;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.warning { border-left: 3px solid var(--warning); }

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    margin-top: auto;
    padding: var(--space-lg) 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8125rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
}

.footer kbd {
    padding: 0.125rem 0.375rem;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

.divider {
    color: var(--border-default);
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* Tablet landscape / small desktop */
@media (max-width: 1200px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .card-phone { grid-column: 1; grid-row: 1; }
    .card-username { grid-column: 2; grid-row: 1; }
    .card-email { grid-column: 1; grid-row: 2; }
    .card-ip { grid-column: 2; grid-row: 2; }
    .card-exif { grid-column: 1 / span 2; grid-row: 3; }
}

/* Tablet portrait - keep 2-column layout */
@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }

    #app {
        padding: var(--header-height) var(--space-md) var(--space-md);
    }

    .header {
        padding: 0 var(--space-md);
    }

    .logo {
        font-size: 1rem;
    }

    /* Keep 2-column on tablet for better space usage */
    .bento-grid {
        gap: var(--space-md);
    }

    .button-grid.cols-4,
    .button-grid.cols-5 {
        grid-template-columns: repeat(5, 1fr);
    }

    .input-row {
        flex-wrap: wrap;
    }

    .input-row .btn {
        flex: 1;
        min-width: calc(50% - var(--space-sm) / 2);
        min-height: 44px;
    }

    .sidebar {
        width: 100%;
    }

    .footer {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .footer .divider {
        display: none;
    }
}

/* Mobile - single column layout */
@media (max-width: 600px) {
    .bento-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .card-phone,
    .card-username,
    .card-email,
    .card-ip,
    .card-exif {
        grid-column: 1;
        grid-row: auto;
    }

    /* Phone lookup: 2 columns for better text fit */
    .button-grid.cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Social buttons: 4 columns for better touch targets */
    .button-grid.cols-4,
    .button-grid.cols-5 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Small mobile - maximize touch targets */
@media (max-width: 480px) {
    .button-grid.cols-2 {
        grid-template-columns: 1fr;
    }

    /* Phone lookup: 2 columns */
    .button-grid.cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Social buttons: 3 columns for 44px+ targets */
    .button-grid.cols-4,
    .button-grid.cols-5 {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Ensure all buttons meet 44px touch target */
    .btn, .btn-small {
        min-height: 44px;
        padding: 0.625rem 0.75rem;
    }

    /* Allow button text to wrap */
    .btn {
        white-space: normal;
        text-align: center;
        line-height: 1.3;
        font-size: 0.8125rem;
    }

    .card {
        padding: var(--space-md);
    }

    .card-header {
        margin-bottom: var(--space-md);
    }

    .shortcut-hint {
        display: none;
    }
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-hover) var(--bg-secondary);
}