:root {
    --bg-dark: #070a12;
    --surface-dark: rgba(18, 26, 43, 0.75);
    --surface-border: rgba(0, 150, 255, 0.18);
    --accent-blue: #0078d4;
    --accent-cyan: #00f0ff;
    --accent-hover: #1084d8;
    --accent-glow: rgba(0, 240, 255, 0.35);
    --danger-red: #ef4444;
    --success-green: #10b981;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --card-bg: rgba(15, 23, 42, 0.65);
    --modal-bg: #0d1322;
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

body.light-mode {
    --bg-dark: #f1f5f9;
    --surface-dark: rgba(255, 255, 255, 0.85);
    --surface-border: rgba(0, 120, 212, 0.2);
    --accent-blue: #0067b8;
    --accent-cyan: #0078d4;
    --accent-glow: rgba(0, 120, 212, 0.25);
    --text-main: #0f172a;
    --text-muted: #475569;
    --card-bg: rgba(255, 255, 255, 0.8);
    --modal-bg: #ffffff;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    padding-bottom: 60px;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Splash Screen */
.splash-screen {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: #070a12;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.splash-screen.fade-out {
    opacity: 0;
    visibility: hidden;
}

.splash-content {
    text-align: center;
}

.splash-logo-img-wrapper {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    border-radius: 50%;
    padding: 5px;
    background: rgba(0, 120, 212, 0.2);
    border: 2px solid var(--accent-cyan);
    box-shadow: 0 0 35px var(--accent-glow);
    animation: pulseSplash 2s infinite alternate;
    display: flex;
    align-items: center;
    justify-content: center;
}

.splash-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 50%;
}

.splash-content h2 {
    font-size: 2rem;
    color: #fff;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.splash-content p {
    font-size: 1.1rem;
    color: var(--accent-cyan);
    font-weight: 600;
}

@keyframes pulseSplash {
    0% { transform: scale(0.95); box-shadow: 0 0 15px var(--accent-glow); }
    100% { transform: scale(1.05); box-shadow: 0 0 35px var(--accent-cyan); }
}

/* Site Lockdown Overlay Styles */
.site-lockdown-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(7, 10, 18, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9990;
    padding: 20px;
}

.lockdown-card {
    background: var(--card-bg);
    border: 1px solid rgba(239, 68, 68, 0.4);
    border-radius: 20px;
    padding: 40px;
    max-width: 550px;
    width: 100%;
    text-align: center;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.9), 0 0 40px rgba(239, 68, 68, 0.25);
    animation: fadeInLockdown 0.4s ease;
}

@keyframes fadeInLockdown {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.lockdown-icon-pulse {
    width: 80px;
    height: 80px;
    background: rgba(239, 68, 68, 0.15);
    border: 2px solid var(--danger-red);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2.2rem;
    color: var(--danger-red);
    box-shadow: 0 0 25px rgba(239, 68, 68, 0.4);
    animation: pulseLockdown 2s infinite alternate;
}

@keyframes pulseLockdown {
    0% { transform: scale(0.95); box-shadow: 0 0 15px rgba(239, 68, 68, 0.3); }
    100% { transform: scale(1.05); box-shadow: 0 0 30px rgba(239, 68, 68, 0.6); }
}

.lockdown-card h2 {
    font-size: 1.6rem;
    color: #fff;
    margin-bottom: 5px;
}

.lockdown-card h3 {
    font-size: 1.1rem;
    color: var(--accent-cyan);
    margin-bottom: 20px;
    font-weight: 500;
}

.lockdown-status-box {
    background: var(--surface-dark);
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    padding: 18px;
    margin-bottom: 25px;
}

.lockdown-status-box p {
    font-size: 1.05rem;
    color: var(--text-main);
    font-weight: 600;
    margin-bottom: 0;
}

.lockdown-footer-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.tech-bg-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(0, 120, 212, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(0, 240, 255, 0.1) 0%, transparent 40%);
    pointer-events: none;
    z-index: -2;
}

.cyber-grid {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: linear-gradient(to right, rgba(0, 150, 255, 0.03) 1px, transparent 1px),
                      linear-gradient(to bottom, rgba(0, 150, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: -1;
}

/* Header UI المتجاوب تماماً مع جميع الأجهزة */
.app-header {
    background: var(--surface-dark);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--surface-border);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    flex-wrap: wrap;
    gap: 15px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo-glow {
    width: 48px;
    height: 48px;
    background: rgba(0, 120, 212, 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 240, 255, 0.4);
    box-shadow: 0 0 20px var(--accent-glow);
    overflow: hidden;
    padding: 3px;
    flex-shrink: 0;
}

.header-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
}

.app-header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.badge-tech {
    font-size: 0.68rem;
    background: rgba(0, 240, 255, 0.15);
    color: var(--accent-cyan);
    padding: 2px 8px;
    border-radius: 20px;
    border: 1px solid rgba(0, 240, 255, 0.3);
}

.badge-count {
    background: var(--danger-red);
    color: #fff;
    font-size: 0.7rem;
    padding: 1px 6px;
    border-radius: 10px;
    margin-right: 5px;
    font-weight: bold;
}

.app-header p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.header-controls-group {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.btn-danger-report {
    background: linear-gradient(135deg, #ef4444, #dc2626) !important;
    color: #ffffff !important;
    border: 1px solid rgba(239, 68, 68, 0.5) !important;
    padding: 7px 14px !important;
    border-radius: 10px !important;
    font-weight: 700 !important;
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.4) !important;
    transition: var(--transition-smooth) !important;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
}

.btn-danger-report:hover {
    background: linear-gradient(135deg, #f87171, #ef4444) !important;
    box-shadow: 0 0 25px rgba(239, 68, 68, 0.7) !important;
    transform: translateY(-2px);
}

.border-danger-modal {
    border-color: rgba(239, 68, 68, 0.5) !important;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.85), 0 0 30px rgba(239, 68, 68, 0.2) !important;
}

.btn-icon-toggle {
    background: var(--card-bg);
    border: 1px solid var(--surface-border);
    color: var(--accent-cyan);
    padding: 7px 12px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.82rem;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-icon-toggle:hover {
    background: var(--accent-cyan);
    color: #000;
}

.container {
    max-width: 1250px;
    margin: 25px auto;
    padding: 0 15px;
}

/* Drag & Drop */
.drop-zone {
    border: 2px dashed rgba(0, 240, 255, 0.4);
    border-radius: 16px;
    padding: 20px;
    text-align: center;
    margin-bottom: 20px;
    background: rgba(0, 120, 212, 0.05);
}

.drop-icon {
    font-size: 2rem;
    color: var(--accent-cyan);
    margin-bottom: 6px;
}

/* Controls & Filter Categories */
.controls-card {
    background: var(--card-bg);
    border: 1px solid var(--surface-border);
    border-radius: 16px;
    padding: 18px;
    backdrop-filter: blur(14px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    margin-bottom: 25px;
}

.search-box {
    position: relative;
    margin-bottom: 15px;
}

.search-icon {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-cyan);
    font-size: 1rem;
}

.search-box input {
    width: 100%;
    padding: 12px 45px;
    background: var(--surface-dark);
    border: 1px solid var(--surface-border);
    border-radius: 10px;
    color: var(--text-main);
    font-size: 0.9rem;
    outline: none;
}

.filter-controls-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.filter-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.admin-category-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    background: var(--surface-dark);
    border: 1px solid var(--surface-border);
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.tag.active, .tag:hover {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: #fff;
    border-color: var(--accent-cyan);
    box-shadow: 0 4px 18px var(--accent-glow);
}

.btn-add-cat, .btn-del-cat {
    padding: 7px 12px;
    font-size: 0.8rem;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.btn-add-cat {
    background: rgba(0, 240, 255, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 240, 255, 0.3);
}

.btn-add-cat:hover {
    background: var(--accent-cyan);
    color: #000;
}

.btn-del-cat {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-red);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-del-cat:hover {
    background: var(--danger-red);
    color: #fff;
}

/* Files Grid المتجاوبة للابتوب والهواتف */
.files-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}

.file-card {
    background: var(--card-bg);
    border: 1px solid var(--surface-border);
    border-radius: 16px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    backdrop-filter: blur(14px);
    transition: var(--transition-smooth);
}

.file-card:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3), 0 0 25px rgba(0, 240, 255, 0.2);
}

.file-card-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.file-icon-wrapper {
    width: 44px;
    height: 44px;
    background: rgba(0, 120, 212, 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 1px solid rgba(0, 240, 255, 0.3);
}

.file-icon {
    font-size: 1.35rem;
    color: var(--accent-cyan);
}

.file-info h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 4px;
    word-break: break-word;
}

.file-badge {
    font-size: 0.72rem;
    background: var(--surface-dark);
    color: var(--accent-cyan);
    padding: 2px 8px;
    border-radius: 6px;
    border: 1px solid rgba(0, 240, 255, 0.2);
}

.file-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 15px;
    line-height: 1.45;
    word-break: break-word;
}

.file-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 14px;
    border-top: 1px solid var(--surface-border);
    padding-top: 10px;
}

.card-actions {
    display: flex;
    gap: 8px;
}

.btn {
    padding: 10px 16px;
    border-radius: 10px;
    border: none;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: var(--transition-smooth);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), #005a9e);
    color: #fff;
    flex: 1;
    border: 1px solid rgba(0, 240, 255, 0.3);
}

.btn-tech-login {
    border: 1px solid var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(0, 240, 255, 0.05);
}

.btn-tech-login:hover {
    background: var(--accent-cyan);
    color: #000;
}

.btn-danger-icon {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-red);
    border: 1px solid rgba(239, 68, 68, 0.3);
    padding: 10px 12px;
}

.btn-danger-icon:hover {
    background: var(--danger-red);
    color: #fff;
}

.btn-confirm-del {
    background: var(--danger-red) !important;
    color: #fff !important;
    padding: 10px 20px !important;
}

.btn-secondary {
    background: var(--surface-dark);
    color: var(--text-main);
    border: 1px solid var(--surface-border);
}

/* Reports Dashboard Styles */
.reports-dashboard-card {
    max-width: 750px !important;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
}

.reports-list-container {
    overflow-y: auto;
    max-height: 60vh;
    padding-right: 5px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.report-item-card {
    background: var(--surface-dark);
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.report-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
    color: var(--accent-cyan);
    flex-wrap: wrap;
    gap: 5px;
}

.report-item-desc {
    font-size: 0.9rem;
    color: var(--text-main);
    line-height: 1.45;
    word-break: break-all;
}

.report-item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--surface-border);
    padding-top: 8px;
    font-size: 0.78rem;
    color: var(--text-muted);
    flex-wrap: wrap;
    gap: 8px;
}

.report-attachment-link {
    color: var(--accent-cyan);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-weight: 600;
}

.report-attachment-link:hover {
    text-decoration: underline;
}

/* Password Feedback */
.password-feedback {
    margin-top: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    min-height: 18px;
}

.password-feedback.success { color: var(--success-green); }
.password-feedback.error { color: var(--danger-red); }

/* Modals المتجاوبة مع الهواتف والشاشات الصغيرة */
.modal-backdrop {
    position: fixed;
    top: 0; right: 0; bottom: 0; left: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
    padding: 15px;
}

.modal-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background: var(--modal-bg);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 18px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 22px;
    transform: scale(0.9) translateY(20px);
    transition: var(--transition-smooth);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
}

.modal-backdrop.active .modal-card {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.file-name-delete-target {
    display: block;
    background: var(--surface-dark);
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--surface-border);
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.88rem;
    word-break: break-all;
    margin-top: 6px;
}

.file-picker-box {
    border: 2px dashed var(--surface-border);
    border-radius: 10px;
    padding: 18px;
    text-align: center;
    cursor: pointer;
    background: var(--surface-dark);
    color: var(--text-muted);
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    margin-bottom: 5px;
    color: var(--text-muted);
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 11px;
    background: var(--surface-dark);
    border: 1px solid var(--surface-border);
    border-radius: 8px;
    color: var(--text-main);
    font-size: 0.88rem;
    outline: none;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.progress-bar-container {
    width: 100%;
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 12px;
    display: none;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background: var(--accent-cyan);
    transition: width 0.2s ease;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 18px;
    flex-wrap: wrap;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background: rgba(16, 185, 129, 0.95);
    color: white;
    padding: 12px 20px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: 300;
    max-width: calc(100vw - 50px);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Footer */
.app-footer-tech {
    text-align: center;
    padding: 22px 15px;
    margin-top: 40px;
    border-top: 1px solid var(--surface-border);
    color: var(--text-muted);
    font-size: 0.85rem;
    background: var(--surface-dark);
    backdrop-filter: blur(10px);
}

.app-footer-tech p {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-cyan);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.site-lockdown-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(11, 15, 25, 0.95);
    backdrop-filter: blur(10px);
    z-index: 99999;
    display: flex;
    justify-content: center;
    align-items: center;
    pointer-events: auto !important;
}

/* Media Queries للتجاوب الفائق مع الهواتف والشاشات الصغيرة */
@media (max-width: 768px) {
    .app-header {
        padding: 12px 15px;
        flex-direction: column;
        align-items: stretch;
    }
    .logo-container {
        justify-content: center;
        text-align: center;
        flex-direction: column;
    }
    .header-controls-group {
        justify-content: center;
        width: 100%;
    }
    .header-actions {
        justify-content: center;
        width: 100%;
        margin-top: 10px;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .files-grid {
        grid-template-columns: 1fr;
    }
    .filter-controls-wrapper {
        flex-direction: column;
        align-items: stretch;
    }
    .admin-category-actions {
        justify-content: center;
    }
}