/* ═══════════════════════════════════════════════════════════════
   Codeamble Media Upload — Premium Dark UI
   ═══════════════════════════════════════════════════════════════ */

/* ── Google Font ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Variables ── */
:root {
    --grad-start:    #0f0c29;
    --grad-mid:      #1a1040;
    --grad-end:      #24243e;
    --accent-1:      #7c3aed;
    --accent-2:      #a855f7;
    --accent-3:      #ec4899;
    --accent-glow:   rgba(124, 58, 237, 0.45);
    --glass-bg:      rgba(255, 255, 255, 0.04);
    --glass-border:  rgba(255, 255, 255, 0.10);
    --glass-hover:   rgba(255, 255, 255, 0.07);
    --card-bg:       rgba(18, 14, 44, 0.75);
    --text-primary:  #f1f0ff;
    --text-secondary:#a59fcf;
    --text-muted:    #6b648f;
    --success-color: #10b981;
    --error-color:   #f43f5e;
    --warning-color: #f59e0b;
    --radius-lg:     20px;
    --radius-md:     14px;
    --radius-sm:     10px;
    --shadow-glow:   0 0 40px rgba(124, 58, 237, 0.2);
    --transition:    all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', system-ui, sans-serif;
    background: linear-gradient(135deg, var(--grad-start) 0%, var(--grad-mid) 50%, var(--grad-end) 100%);
    min-height: 100vh;
    color: var(--text-primary);
    overflow-x: hidden;
    position: relative;
}

/* ── Animated Background Particles ── */
.bg-particles {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.bg-particles span {
    position: absolute;
    display: block;
    border-radius: 50%;
    background: var(--accent-1);
    opacity: 0.06;
    animation: floatParticle linear infinite;
}

.bg-particles span:nth-child(1)  { width:80px;  height:80px;  left:10%; top:20%; animation-duration:18s; animation-delay:0s; }
.bg-particles span:nth-child(2)  { width:140px; height:140px; left:75%; top:5%;  animation-duration:22s; animation-delay:2s; background:var(--accent-3); }
.bg-particles span:nth-child(3)  { width:60px;  height:60px;  left:50%; top:80%; animation-duration:15s; animation-delay:4s; }
.bg-particles span:nth-child(4)  { width:200px; height:200px; left:5%;  top:65%; animation-duration:28s; animation-delay:1s; opacity:0.03; }
.bg-particles span:nth-child(5)  { width:100px; height:100px; left:88%; top:50%; animation-duration:20s; animation-delay:3s; background:var(--accent-2); }
.bg-particles span:nth-child(6)  { width:50px;  height:50px;  left:30%; top:10%; animation-duration:12s; animation-delay:5s; }
.bg-particles span:nth-child(7)  { width:120px; height:120px; left:60%; top:60%; animation-duration:24s; animation-delay:0.5s; background:var(--accent-3); opacity:0.04; }
.bg-particles span:nth-child(8)  { width:70px;  height:70px;  left:20%; top:90%; animation-duration:17s; animation-delay:2.5s; }
.bg-particles span:nth-child(9)  { width:90px;  height:90px;  left:95%; top:30%; animation-duration:19s; animation-delay:1.5s; background:var(--accent-2); }
.bg-particles span:nth-child(10) { width:160px; height:160px; left:45%; top:40%; animation-duration:30s; animation-delay:0s; opacity:0.025; }

@keyframes floatParticle {
    0%   { transform: translateY(0)   rotate(0deg)   scale(1); }
    33%  { transform: translateY(-60px) rotate(120deg) scale(1.1); }
    66%  { transform: translateY(30px)  rotate(240deg) scale(0.9); }
    100% { transform: translateY(0)   rotate(360deg) scale(1); }
}

/* ── Layout ── */
.container { position: relative; z-index: 1; }

/* ── Header ── */
.header-section { animation: fadeInDown 0.7s ease both; }

.brand-logo {
    width: 80px; height: 80px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
    border-radius: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #fff;
    box-shadow: 0 8px 32px var(--accent-glow), 0 0 0 4px rgba(124,58,237,0.15);
    animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { box-shadow: 0 8px 32px var(--accent-glow), 0 0 0 4px rgba(124,58,237,0.15); }
    50%       { box-shadow: 0 8px 48px rgba(168,85,247,0.55), 0 0 0 8px rgba(124,58,237,0.08); }
}

.brand-title {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff 0%, var(--accent-2) 50%, var(--accent-3) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.4rem;
}

.brand-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: 0.3px;
}

/* ── Upload Card ── */
.upload-card {
    background: var(--card-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-glow), 0 20px 60px rgba(0,0,0,0.5);
    animation: fadeInUp 0.7s ease 0.1s both;
    transition: var(--transition);
}

.upload-card:hover {
    box-shadow: 0 0 60px rgba(124,58,237,0.28), 0 20px 60px rgba(0,0,0,0.5);
}

/* ── Form Label ── */
.form-label-custom {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.65rem;
}

.form-label-custom i { margin-right: 0.4rem; color: var(--accent-2); }

/* ── Select Dropdown ── */
.form-select-custom {
    background-color: var(--glass-bg) !important;
    border: 1.5px solid var(--glass-border) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-md) !important;
    padding: 0.85rem 1.1rem !important;
    font-size: 0.97rem !important;
    font-family: 'Inter', sans-serif !important;
    transition: var(--transition) !important;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23a59fcf' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E") !important;
}

.form-select-custom:focus {
    border-color: var(--accent-1) !important;
    box-shadow: 0 0 0 3px rgba(124,58,237,0.25) !important;
    outline: none !important;
    background-color: var(--glass-hover) !important;
}

.form-select-custom option {
    background: #1a1040;
    color: var(--text-primary);
}

/* ── Drop Zone ── */
.drop-zone {
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-md);
    padding: 2.5rem 1.5rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    background: var(--glass-bg);
    position: relative;
    overflow: hidden;
}

.drop-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(124,58,237,0.05), rgba(236,72,153,0.05));
    opacity: 0;
    transition: var(--transition);
    border-radius: inherit;
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--accent-1);
    background: rgba(124,58,237,0.08);
    transform: scale(1.01);
}

.drop-zone:hover::before,
.drop-zone.drag-over::before { opacity: 1; }

.drop-zone.drag-over {
    border-color: var(--accent-2);
    box-shadow: 0 0 0 4px rgba(124,58,237,0.15), inset 0 0 40px rgba(124,58,237,0.08);
}

.drop-zone-icon {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    display: block;
    animation: bounceUpDown 2.5s ease-in-out infinite;
}

@keyframes bounceUpDown {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-8px); }
}

.drop-zone-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.drop-zone-subtext {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.drop-zone-limits {
    font-size: 0.77rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.6;
}

/* ── Browse Button ── */
.btn-browse {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.6rem 1.4rem;
    font-size: 0.88rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(124,58,237,0.4);
}

.btn-browse:hover {
    background: linear-gradient(135deg, var(--accent-2), var(--accent-3));
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(124,58,237,0.5);
    color: #fff;
}

/* ── File List ── */
.file-list {
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    animation: fadeInUp 0.3s ease;
}

.file-list-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: rgba(124,58,237,0.08);
    border-bottom: 1px solid var(--glass-border);
}

.file-count-badge {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent-2);
    background: rgba(168,85,247,0.12);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    border: 1px solid rgba(168,85,247,0.25);
}

.btn-clear {
    background: transparent;
    color: var(--error-color);
    border: 1px solid rgba(244,63,94,0.3);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.3rem 0.8rem;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
}

.btn-clear:hover {
    background: rgba(244,63,94,0.1);
    border-color: var(--error-color);
    color: var(--error-color);
}

/* ── File Item ── */
.file-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: var(--transition);
    animation: slideInRight 0.25s ease both;
}

.file-item:last-child { border-bottom: none; }
.file-item:hover { background: var(--glass-hover); }

.file-item-icon {
    width: 36px; height: 36px;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.file-item-icon.is-image { background: rgba(16,185,129,0.15); color: #10b981; }
.file-item-icon.is-video { background: rgba(168,85,247,0.15); color: var(--accent-2); }

.file-item-info { flex: 1; min-width: 0; }

.file-item-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-item-size {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 1px;
}

.file-item-remove {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 6px;
    transition: var(--transition);
    font-size: 1rem;
    line-height: 1;
    flex-shrink: 0;
}

.file-item-remove:hover { color: var(--error-color); background: rgba(244,63,94,0.1); }

/* ── Progress Bar ── */
.progress-section { animation: fadeInUp 0.3s ease; }

.progress-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-2);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.spin-icon { animation: spin 1s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

.progress-percent {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
}

.progress-track {
    height: 8px;
    background: rgba(255,255,255,0.06);
    border-radius: 99px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-1), var(--accent-2), var(--accent-3));
    border-radius: 99px;
    transition: width 0.3s ease;
    background-size: 200% auto;
    animation: shimmerBar 2s linear infinite;
}

@keyframes shimmerBar {
    0%   { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.progress-status {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-align: center;
}

/* ── Upload Button ── */
.btn-upload {
    background: linear-gradient(135deg, var(--accent-1) 0%, var(--accent-2) 50%, var(--accent-3) 100%);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    padding: 1rem;
    font-size: 1rem;
    font-weight: 700;
    font-family: 'Inter', sans-serif;
    letter-spacing: 0.3px;
    transition: var(--transition);
    box-shadow: 0 6px 24px rgba(124,58,237,0.45);
    position: relative;
    overflow: hidden;
    background-size: 200% auto;
}

.btn-upload::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
    opacity: 0;
    transition: var(--transition);
}

.btn-upload:hover:not(:disabled) {
    background-position: right center;
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(124,58,237,0.6);
    color: #fff;
}

.btn-upload:hover:not(:disabled)::after { opacity: 1; }

.btn-upload:active:not(:disabled) {
    transform: translateY(0);
}

.btn-upload:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-upload i { margin-right: 0.5rem; font-size: 1rem; }

/* ── Alert Box ── */
#alertBox .alert {
    border-radius: var(--radius-md);
    border: none;
    padding: 1rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 500;
    animation: fadeInUp 0.3s ease;
}

.alert-success-custom {
    background: rgba(16,185,129,0.12) !important;
    color: #6ee7b7 !important;
    border: 1px solid rgba(16,185,129,0.25) !important;
}

.alert-error-custom {
    background: rgba(244,63,94,0.12) !important;
    color: #fda4af !important;
    border: 1px solid rgba(244,63,94,0.25) !important;
}

.alert-warning-custom {
    background: rgba(245,158,11,0.12) !important;
    color: #fcd34d !important;
    border: 1px solid rgba(245,158,11,0.25) !important;
}

/* ── Results Card ── */
.results-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    animation: fadeInUp 0.35s ease;
}

.results-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 0.85rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--glass-border);
}

.results-title i { color: var(--accent-2); margin-right: 0.4rem; }

.result-item {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    font-size: 0.82rem;
    animation: slideInRight 0.25s ease both;
}

.result-item:last-child { border-bottom: none; }

.result-icon-ok   { color: var(--success-color); font-size: 1rem; flex-shrink: 0; margin-top: 1px; }
.result-icon-fail { color: var(--error-color);   font-size: 1rem; flex-shrink: 0; margin-top: 1px; }

.result-name {
    font-weight: 500;
    color: var(--text-primary);
    word-break: break-all;
}

.result-saved {
    color: var(--text-muted);
    font-size: 0.76rem;
    margin-top: 1px;
}

.result-msg-ok   { color: var(--success-color); font-size: 0.78rem; margin-top: 1px; }
.result-msg-fail { color: var(--error-color);   font-size: 0.78rem; margin-top: 1px; }

/* ── Format Badges ── */
.formats-info { animation: fadeInUp 0.7s ease 0.3s both; }

.format-badge {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    transition: var(--transition);
}

.format-badge:hover {
    background: var(--glass-hover);
    border-color: rgba(124,58,237,0.3);
    transform: translateY(-2px);
}

.format-badge i {
    font-size: 1.6rem;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.format-badge span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.format-badge small {
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.3px;
}

/* ── Footer ── */
.footer-text {
    color: var(--text-muted);
    font-size: 0.8rem;
    animation: fadeInUp 0.7s ease 0.4s both;
}

/* ── Animations ── */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(-15px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(124,58,237,0.4); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-1); }

/* ── Responsive ── */
@media (max-width: 576px) {
    .upload-card { padding: 1.5rem; }
    .brand-logo  { width: 64px; height: 64px; font-size: 1.6rem; }
    .drop-zone   { padding: 2rem 1rem; }
}