/* ==========================================================================
   KRIPTOGRAFI HYBRID - MODERN DESIGN SYSTEM & STYLES
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

/* --- CSS Variables & Design Tokens --- */
:root {
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-heading: 'Space Grotesk', 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Light Theme Palette */
    --bg-canvas: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #ffffff;
    --bg-surface-subtle: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.85);

    --border-subtle: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-focus: #6366f1;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;

    --accent-emerald: #10b981;
    --accent-emerald-glow: rgba(16, 185, 129, 0.25);
    --accent-indigo: #6366f1;
    --accent-indigo-glow: rgba(99, 102, 241, 0.25);
    --accent-cyan: #06b6d4;
    --accent-purple: #8b5cf6;
    --accent-rose: #f43f5e;
    --accent-amber: #f59e0b;

    --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    --card-shadow-hover: 0 20px 35px -5px rgba(15, 23, 42, 0.12), 0 10px 15px -5px rgba(99, 102, 241, 0.1);
    --glow-hero: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.15) 0%, rgba(16, 185, 129, 0.08) 50%, transparent 80%);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-pill: 9999px;
}

.dark {
    /* Dark Obsidian Theme Palette */
    --bg-canvas: #090d16;
    --bg-surface: #111726;
    --bg-surface-elevated: #182238;
    --bg-surface-subtle: #1e293b;
    --bg-glass: rgba(17, 23, 38, 0.85);

    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-medium: rgba(255, 255, 255, 0.15);
    --border-focus: #818cf8;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0f172a;

    --accent-emerald: #10b981;
    --accent-emerald-glow: rgba(16, 185, 129, 0.35);
    --accent-indigo: #818cf8;
    --accent-indigo-glow: rgba(129, 140, 248, 0.35);
    --accent-cyan: #22d3ee;
    --accent-purple: #a855f7;
    --accent-rose: #fb7185;
    --accent-amber: #fbbf24;

    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
    --card-shadow-hover: 0 20px 40px -10px rgba(0, 0, 0, 0.7), 0 0 20px rgba(99, 102, 241, 0.2);
    --glow-hero: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.25) 0%, rgba(16, 185, 129, 0.15) 45%, transparent 75%);
}

/* --- Base Body & Typography --- */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    background-color: var(--bg-canvas);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Ambient Background Light */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 600px;
    background: var(--glow-hero);
    pointer-events: none;
    z-index: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    letter-spacing: -0.02em;
    font-weight: 700;
}

/* Gradient Text */
.text-gradient-primary {
    background: linear-gradient(135deg, var(--accent-indigo) 0%, var(--accent-cyan) 50%, var(--accent-emerald) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-purple {
    background: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- Header & Navbar --- */
.navbar-glass {
    position: sticky;
    top: 0;
    z-index: 40;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    transition: all 0.3s ease;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-surface-subtle);
}

.nav-link.active {
    color: var(--accent-indigo);
    background: rgba(99, 102, 241, 0.1);
    font-weight: 600;
}

/* --- Mobile Navigation Drawer System --- */
.mobile-drawer-backdrop {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: rgba(0, 0, 0, 0.75) !important;
    backdrop-filter: blur(8px) !important;
    -webkit-backdrop-filter: blur(8px) !important;
    z-index: 99990 !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transition: opacity 0.3s ease, visibility 0.3s ease !important;
}

.mobile-drawer-backdrop.active {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
}

.mobile-drawer {
    position: fixed !important;
    top: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 320px !important;
    max-width: 85vw !important;
    height: 100vh !important;
    background-color: var(--bg-surface-elevated) !important;
    border-left: 1px solid var(--border-medium) !important;
    z-index: 99999 !important;
    padding: 1.5rem !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-between !important;
    transform: translateX(100%) !important;
    visibility: hidden !important;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s ease !important;
    box-shadow: -15px 0 45px rgba(0, 0, 0, 0.6) !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
}

.mobile-drawer.active {
    transform: translateX(0) !important;
    visibility: visible !important;
}

.mobile-drawer-link {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.mobile-drawer-link:hover {
    background: var(--bg-surface-subtle);
    color: var(--text-primary);
}

.mobile-drawer-link.active {
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-indigo);
    border-color: rgba(99, 102, 241, 0.25);
}

/* Status Pulse Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-pill);
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-emerald);
    border: 1px solid rgba(16, 185, 129, 0.25);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-emerald);
    box-shadow: 0 0 10px var(--accent-emerald);
    animation: pulseGlow 2s infinite ease-in-out;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}

/* --- Cards & Containers --- */
.crypto-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    position: relative;
    overflow: hidden;
}

.crypto-card:hover {
    box-shadow: var(--card-shadow-hover);
    border-color: var(--border-medium);
}

.crypto-card-glass {
    background-color: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* --- Buttons --- */
.btn-modern {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    border: none;
    outline: none;
}

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

.btn-modern:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn-gradient {
    background: linear-gradient(135deg, #4f46e5 0%, #6366f1 50%, #06b6d4 100%);
    color: #ffffff !important;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.35);
}

.btn-gradient:hover:not(:disabled) {
    background: linear-gradient(135deg, #4338ca 0%, #4f46e5 50%, #0891b2 100%);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
    transform: translateY(-2px);
}

.btn-emerald {
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    color: #ffffff !important;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.35);
}

.btn-emerald:hover:not(:disabled) {
    background: linear-gradient(135deg, #047857 0%, #059669 100%);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--bg-surface-subtle);
    color: var(--text-primary) !important;
    border: 1px solid var(--border-subtle);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--border-subtle);
    border-color: var(--border-medium);
}

/* --- Modern Segmented Tabs --- */
.segmented-tabs-wrapper {
    background-color: var(--bg-surface-subtle);
    padding: 6px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
    display: inline-flex;
    gap: 4px;
}

.segmented-tab {
    padding: 10px 24px;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.segmented-tab:hover {
    color: var(--text-primary);
}

.segmented-tab.active {
    background-color: var(--bg-surface);
    color: var(--accent-indigo);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.dark .segmented-tab.active {
    background-color: var(--bg-surface-elevated);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
}

/* --- Drag & Drop Zone --- */
.dropzone-container {
    border: 2px dashed var(--border-medium);
    border-radius: var(--radius-lg);
    background-color: var(--bg-surface-subtle);
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
}

.dropzone-container:hover, .dropzone-container.dragover {
    border-color: var(--accent-indigo);
    background-color: rgba(99, 102, 241, 0.06);
    transform: translateY(-2px);
}

.dropzone-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 12px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-indigo);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.25s ease;
}

.dropzone-container:hover .dropzone-icon {
    transform: scale(1.1);
}

/* --- Key Card & Mono Code Inputs --- */
.key-box-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background-color: var(--bg-surface-subtle);
    border-top-left-radius: var(--radius-md);
    border-top-right-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    border-bottom: none;
    font-size: 0.85rem;
}

.crypto-textarea {
    width: 100%;
    font-family: var(--font-mono) !important;
    font-size: 0.82rem !important;
    line-height: 1.5 !important;
    padding: 12px !important;
    background-color: var(--bg-surface) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-subtle) !important;
    border-bottom-left-radius: var(--radius-md) !important;
    border-bottom-right-radius: var(--radius-md) !important;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    resize: vertical;
}

.crypto-textarea:focus {
    outline: none;
    border-color: var(--border-focus) !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15) !important;
}

/* --- Toast Notifications --- */
#toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
    max-width: 420px;
    width: 90%;
}

.toast {
    pointer-events: auto;
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    animation: toastSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    position: relative;
    overflow: hidden;
}

.toast.toast-error {
    border-left: 4px solid var(--accent-rose);
}

.toast.toast-success {
    border-left: 4px solid var(--accent-emerald);
}

.toast.toast-info {
    border-left: 4px solid var(--accent-indigo);
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes toastFadeOut {
    to {
        opacity: 0;
        transform: translateY(-10px) scale(0.95);
    }
}

/* --- Pipeline Visualizer --- */
.pipeline-step {
    position: relative;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    transition: all 0.3s ease;
}

.pipeline-step:hover {
    transform: translateY(-4px);
    border-color: var(--accent-indigo);
    box-shadow: var(--card-shadow-hover);
}

.step-num-badge {
    position: absolute;
    top: -12px;
    left: 20px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-cyan));
    color: white;
    font-weight: 700;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

/* --- File Selected Pill Preview --- */
.file-selected-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    border-radius: var(--radius-md);
    background-color: var(--bg-surface);
    border: 1px solid var(--border-medium);
    margin-top: 10px;
    font-size: 0.88rem;
    color: var(--text-primary);
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* --- Language Switcher --- */
.lang-switcher-pill {
    display: inline-flex;
    align-items: center;
    background-color: var(--bg-surface-subtle);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-pill);
    padding: 3px;
    gap: 2px;
}

.lang-btn {
    padding: 3px 8px;
    font-size: 0.72rem;
    font-weight: 700;
    border-radius: var(--radius-pill);
    color: var(--text-muted);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    line-height: 1;
}

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

.lang-btn.active {
    background-color: var(--bg-surface);
    color: var(--accent-indigo);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.dark .lang-btn.active {
    background-color: var(--bg-surface-elevated);
    color: #ffffff;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
}

/* ==========================================================================
   COMPREHENSIVE MOBILE RESPONSIVE OPTIMIZATIONS
   ========================================================================== */

/* Prevent horizontal overflow globally */
html, body {
    max-width: 100vw;
    overflow-x: hidden;
}

@media (max-width: 768px) {
    /* Layout & Spacing */
    main {
        padding-top: 1rem !important;
        padding-bottom: 2rem !important;
        padding-left: 0.75rem !important;
        padding-right: 0.75rem !important;
    }

    .crypto-card {
        padding: 1.25rem 0.875rem !important;
        border-radius: var(--radius-md) !important;
    }

    /* Segmented Pill Tabs for Mobile Touch */
    .segmented-tabs-wrapper {
        width: 100% !important;
        display: flex !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        scrollbar-width: none !important;
        padding: 4px !important;
        border-radius: var(--radius-lg) !important;
        gap: 3px !important;
    }

    .segmented-tabs-wrapper::-webkit-scrollbar {
        display: none !important;
    }

    .segmented-tab {
        padding: 7px 10px !important;
        font-size: 0.78rem !important;
        white-space: nowrap !important;
        flex: 1 0 auto !important;
        justify-content: center !important;
        gap: 5px !important;
        border-radius: var(--radius-md) !important;
    }

    .segmented-tab svg {
        width: 14px !important;
        height: 14px !important;
        flex-shrink: 0 !important;
    }

    /* Key Card Box Header on Small Screens */
    .key-box-header {
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 8px !important;
        padding: 8px 10px !important;
    }

    .key-box-header > div:first-child,
    .key-box-header > span:first-child {
        width: 100% !important;
        display: flex !important;
        justify-content: space-between !important;
        align-items: center !important;
    }

    .key-box-header > div:last-child,
    .key-box-header > button:last-child {
        width: 100% !important;
        display: flex !important;
        justify-content: flex-end !important;
        gap: 6px !important;
        border-top: 1px solid var(--border-subtle) !important;
        padding-top: 6px !important;
    }

    /* Crypto Textarea (Prevent iOS Auto-Zoom & ensure fit) */
    .crypto-textarea {
        font-size: 13px !important;
        height: 110px !important;
        padding: 8px 10px !important;
        word-break: break-all !important;
    }

    #text-preview {
        white-space: pre-wrap !important;
        word-break: break-all !important;
    }

    /* Dropzone on Mobile */
    .dropzone-container {
        padding: 1.25rem 0.75rem !important;
    }

    .dropzone-container p {
        font-size: 0.85rem !important;
        line-height: 1.4 !important;
    }

    .dropzone-icon {
        width: 42px !important;
        height: 42px !important;
        margin-bottom: 8px !important;
    }

    .dropzone-icon svg {
        width: 22px !important;
        height: 22px !important;
    }

    /* Toast Notification Mobile Positioning */
    #toast-container {
        top: 12px !important;
        left: 12px !important;
        right: 12px !important;
        width: auto !important;
        max-width: none !important;
    }

    .toast {
        padding: 12px 14px !important;
        font-size: 0.82rem !important;
    }

    /* Pipeline Steps on Mobile */
    .pipeline-step {
        padding: 1.25rem 0.875rem !important;
    }

    .step-num-badge {
        width: 24px !important;
        height: 24px !important;
        font-size: 0.75rem !important;
        top: -10px !important;
        left: 14px !important;
    }

    /* File Selected Preview Badge */
    .file-selected-badge {
        max-width: 100% !important;
        padding: 6px 10px !important;
        font-size: 0.8rem !important;
    }

    /* Buttons Mobile Touch */
    .btn-modern {
        padding: 0.65rem 1rem !important;
        font-size: 0.88rem !important;
    }
}

@media (max-width: 480px) {
    /* Narrow Screens (iPhone SE, Galaxy A series, etc.) */
    .segmented-tab {
        padding: 6px 8px !important;
        font-size: 0.72rem !important;
    }

    .btn-modern {
        width: 100% !important;
        padding: 0.7rem 1rem !important;
    }

    .key-box-header span {
        font-size: 0.78rem !important;
    }
}