/* ==========================================================================
   QR CODE PROCESSOR - STYLES
   A bold, high-contrast aesthetic with red, black, and white
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS VARIABLES - Design Tokens
   -------------------------------------------------------------------------- */
:root {
    /* Color Palette - Red, Black, White with dramatic contrast */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-elevated: #1a1a1a;
    --color-bg-card: rgba(20, 20, 20, 0.7);

    --color-text-primary: #ffffff;
    --color-text-secondary: #b0b0b0;
    --color-text-muted: #666666;

    --color-accent-primary: #e31837;
    /* Vibrant Red */
    --color-accent-secondary: #ff3a54;
    /* Lighter Red */
    --color-accent-tertiary: #8b0000;
    /* Dark Red */
    --color-accent-success: #22c55e;
    /* Green for success */
    --color-accent-error: #ef4444;
    /* Error red */

    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(227, 24, 55, 0.4);
    --color-border-active: var(--color-accent-primary);

    /* Typography */
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows & Glows */
    --shadow-glow-red: 0 0 80px rgba(227, 24, 55, 0.25);
    --shadow-glow-red-intense: 0 0 120px rgba(227, 24, 55, 0.4);
    --shadow-subtle: 0 4px 24px rgba(0, 0, 0, 0.5);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --------------------------------------------------------------------------
   RESET & BASE STYLES
   -------------------------------------------------------------------------- */
*,
*::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-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* --------------------------------------------------------------------------
   BACKGROUND EFFECTS - More dramatic with red accents
   -------------------------------------------------------------------------- */
.bg-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(227, 24, 55, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(227, 24, 55, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
    animation: gridPulse 8s ease-in-out infinite;
}

@keyframes gridPulse {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

.bg-glow {
    position: fixed;
    width: 700px;
    height: 700px;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
}

.bg-glow-1 {
    top: -300px;
    right: -200px;
    background: var(--color-accent-primary);
    animation: floatGlow1 15s ease-in-out infinite;
}

.bg-glow-2 {
    bottom: -400px;
    left: -300px;
    background: var(--color-accent-tertiary);
    animation: floatGlow2 20s ease-in-out infinite;
}

@keyframes floatGlow1 {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.4;
    }

    33% {
        transform: translate(-50px, 80px) scale(1.1);
        opacity: 0.6;
    }

    66% {
        transform: translate(30px, -40px) scale(0.9);
        opacity: 0.3;
    }
}

@keyframes floatGlow2 {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.3;
    }

    50% {
        transform: translate(100px, -100px) rotate(180deg);
        opacity: 0.5;
    }
}

.bg-noise {
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.04;
    pointer-events: none;
    z-index: 0;
}

/* --------------------------------------------------------------------------
   LAYOUT
   -------------------------------------------------------------------------- */
.container {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* --------------------------------------------------------------------------
   HERO SECTION
   -------------------------------------------------------------------------- */
.hero {
    text-align: center;
    margin-bottom: var(--space-3xl);
    animation: heroReveal 1s ease-out;
}

@keyframes heroReveal {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
        filter: blur(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: linear-gradient(135deg, rgba(227, 24, 55, 0.1), rgba(227, 24, 55, 0.05));
    border: 1px solid rgba(227, 24, 55, 0.3);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-accent-secondary);
    margin-bottom: var(--space-lg);
    animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(227, 24, 55, 0.4);
    }

    50% {
        box-shadow: 0 0 20px 5px rgba(227, 24, 55, 0.2);
    }
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-primary);
    border-radius: 50%;
    animation: dotPulse 1.5s ease-in-out infinite;
    box-shadow: 0 0 10px var(--color-accent-primary);
}

@keyframes dotPulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
        box-shadow: 0 0 10px var(--color-accent-primary);
    }

    50% {
        opacity: 0.6;
        transform: scale(1.3);
        box-shadow: 0 0 20px var(--color-accent-primary);
    }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3.5rem, 12vw, 8rem);
    font-weight: 400;
    line-height: 0.9;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-lg);
    position: relative;
}

.title-line {
    display: block;
    animation: titleSlide 0.8s ease-out backwards;
}

.title-line:first-child {
    animation-delay: 0.2s;
}

.title-line:last-child {
    animation-delay: 0.4s;
}

@keyframes titleSlide {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.title-accent {
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary), #ffffff);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 5s ease-in-out infinite;
}

@keyframes gradientShift {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 0 auto;
    font-weight: 300;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --------------------------------------------------------------------------
   UPLOAD ZONE
   -------------------------------------------------------------------------- */
.upload-section {
    margin-bottom: var(--space-3xl);
    animation: fadeInUp 0.8s ease-out 0.3s backwards;
}

.upload-zone {
    position: relative;
    background: var(--color-bg-card);
    backdrop-filter: blur(20px);
    border: 2px dashed rgba(227, 24, 55, 0.3);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition:
        border-color var(--transition-base),
        box-shadow var(--transition-base),
        transform var(--transition-fast);
    overflow: hidden;
}

/* Corner accent lines */
.upload-zone::before,
.upload-zone::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    border: 2px solid transparent;
    transition: all var(--transition-base);
    pointer-events: none;
}

.upload-zone::before {
    top: 16px;
    left: 16px;
    border-top-color: transparent;
    border-left-color: transparent;
}

.upload-zone::after {
    bottom: 16px;
    right: 16px;
    border-bottom-color: transparent;
    border-right-color: transparent;
}

.upload-zone:hover {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow-red);
    transform: translateY(-4px);
    animation: zoneGlow 2s ease-in-out infinite;
}

@keyframes zoneGlow {

    0%,
    100% {
        box-shadow: var(--shadow-glow-red);
    }

    50% {
        box-shadow: var(--shadow-glow-red-intense);
    }
}

.upload-zone:hover::before {
    border-top-color: var(--color-accent-primary);
    border-left-color: var(--color-accent-primary);
    width: 80px;
    height: 80px;
    top: 12px;
    left: 12px;
}

.upload-zone:hover::after {
    border-bottom-color: var(--color-accent-primary);
    border-right-color: var(--color-accent-primary);
    width: 80px;
    height: 80px;
    bottom: 12px;
    right: 12px;
}

.upload-zone.drag-over {
    border-color: var(--color-accent-primary);
    border-style: solid;
    box-shadow: var(--shadow-glow-red-intense);
    animation: dragPulse 0.5s ease-in-out infinite;
}

@keyframes dragPulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.01);
    }
}

.upload-zone-inner {
    position: relative;
    padding: var(--space-3xl) var(--space-xl);
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    z-index: 1;
}

/* Upload States */
.upload-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.upload-state.hidden {
    display: none;
}

.upload-icon {
    width: 72px;
    height: 72px;
    color: var(--color-text-muted);
    transition: all var(--transition-base);
    position: relative;
}

/* Icon floating animation on hover */
.upload-zone:hover .upload-icon {
    color: var(--color-accent-primary);
    animation: iconFloat 2s ease-in-out infinite;
    filter: drop-shadow(0 0 20px rgba(227, 24, 55, 0.5));
}

@keyframes iconFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.upload-icon-pulse {
    animation: iconPulseRed 0.8s ease-in-out infinite !important;
    color: var(--color-accent-primary) !important;
    filter: drop-shadow(0 0 30px var(--color-accent-primary));
}

@keyframes iconPulseRed {

    0%,
    100% {
        transform: scale(1);
        filter: drop-shadow(0 0 20px var(--color-accent-primary));
    }

    50% {
        transform: scale(1.15);
        filter: drop-shadow(0 0 40px var(--color-accent-primary));
    }
}

.upload-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.upload-text-main {
    font-size: 1.375rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

.upload-text-sub {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.upload-formats {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.format-tag {
    padding: var(--space-xs) var(--space-md);
    background: rgba(227, 24, 55, 0.1);
    border: 1px solid rgba(227, 24, 55, 0.2);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: var(--color-accent-secondary);
    transition: all var(--transition-fast);
}

.upload-zone:hover .format-tag {
    background: rgba(227, 24, 55, 0.2);
    border-color: rgba(227, 24, 55, 0.4);
    transform: translateY(-2px);
}

.format-tag:nth-child(1) {
    transition-delay: 0ms;
}

.format-tag:nth-child(2) {
    transition-delay: 50ms;
}

.format-tag:nth-child(3) {
    transition-delay: 100ms;
}

/* Processing State */
.processing-spinner {
    position: relative;
    width: 80px;
    height: 80px;
}

.spinner-ring {
    position: absolute;
    inset: 0;
    border: 3px solid transparent;
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spinRing 1s ease-in-out infinite;
}

.spinner-ring:nth-child(1) {
    border-top-color: var(--color-accent-primary);
    animation-duration: 1s;
}

.spinner-ring:nth-child(2) {
    inset: 10px;
    border-top-color: var(--color-text-primary);
    animation-duration: 1.3s;
    animation-direction: reverse;
}

.spinner-ring:nth-child(3) {
    inset: 20px;
    border-top-color: var(--color-accent-secondary);
    animation-duration: 0.8s;
}

@keyframes spinRing {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.progress-bar {
    width: 240px;
    height: 6px;
    background: var(--color-bg-elevated);
    border-radius: 3px;
    overflow: hidden;
    margin-top: var(--space-md);
    position: relative;
}

.progress-bar::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: progressShimmer 1.5s infinite;
}

@keyframes progressShimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-secondary));
    border-radius: 3px;
    transition: width var(--transition-fast);
    box-shadow: 0 0 20px var(--color-accent-primary);
}

/* Success State */
.success-icon {
    width: 80px;
    height: 80px;
    color: var(--color-accent-success);
    animation: successBounce 0.6s var(--transition-bounce);
}

@keyframes successBounce {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }

    60% {
        transform: scale(1.2) rotate(10deg);
    }

    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.upload-state-success .upload-text-main {
    animation: textReveal 0.4s ease-out 0.3s backwards;
}

.upload-state-success .upload-text-sub {
    animation: textReveal 0.4s ease-out 0.5s backwards;
}

@keyframes textReveal {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Error State */
.error-icon {
    width: 80px;
    height: 80px;
    color: var(--color-accent-error);
    animation: errorShake 0.5s ease-in-out;
}

@keyframes errorShake {

    0%,
    100% {
        transform: translateX(0);
    }

    20%,
    60% {
        transform: translateX(-10px);
    }

    40%,
    80% {
        transform: translateX(10px);
    }
}

.retry-btn {
    margin-top: var(--space-lg);
    padding: var(--space-sm) var(--space-xl);
    background: transparent;
    border: 2px solid var(--color-accent-primary);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-accent-primary);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-fast);
}

.retry-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-accent-primary);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
}

.retry-btn:hover {
    color: var(--color-text-primary);
    box-shadow: var(--shadow-glow-red);
}

.retry-btn:hover::before {
    transform: translateX(0);
}

.retry-btn span {
    position: relative;
    z-index: 1;
}

/* --------------------------------------------------------------------------
   INFO CARDS
   -------------------------------------------------------------------------- */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.info-card {
    position: relative;
    padding: var(--space-xl);
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    overflow: hidden;
    animation: cardReveal 0.6s ease-out backwards;
}

.info-card:nth-child(1) {
    animation-delay: 0.5s;
}

.info-card:nth-child(2) {
    animation-delay: 0.65s;
}

.info-card:nth-child(3) {
    animation-delay: 0.8s;
}

@keyframes cardReveal {
    from {
        opacity: 0;
        transform: translateY(30px) rotateX(10deg);
    }

    to {
        opacity: 1;
        transform: translateY(0) rotateX(0deg);
    }
}

/* Card hover glow effect */
.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent-primary), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.info-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%,
            rgba(227, 24, 55, 0.1) 0%,
            transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.info-card:hover {
    border-color: rgba(227, 24, 55, 0.3);
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow-red);
}

.info-card:hover::before,
.info-card:hover::after {
    opacity: 1;
}

.info-card-number {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--color-accent-primary);
    opacity: 0.2;
    line-height: 1;
    transition: all var(--transition-base);
}

.info-card:hover .info-card-number {
    opacity: 0.5;
    transform: scale(1.1);
}

.info-card-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
    position: relative;
    z-index: 1;
}

.info-card-text {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */
.footer {
    margin-top: auto;
    padding-top: var(--space-2xl);
    text-align: center;
    animation: fadeInUp 0.8s ease-out 1s backwards;
}

.footer-text {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.footer-divider {
    margin: 0 var(--space-sm);
    color: var(--color-accent-primary);
    opacity: 0.5;
}

.footer-mono {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-accent-secondary);
}

/* --------------------------------------------------------------------------
   RESPONSIVE DESIGN
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
    .container {
        padding: var(--space-lg) var(--space-md);
    }

    .hero-title {
        font-size: clamp(2.5rem, 15vw, 4.5rem);
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .upload-zone-inner {
        padding: var(--space-2xl) var(--space-lg);
        min-height: 240px;
    }

    .upload-icon {
        width: 56px;
        height: 56px;
    }

    .upload-formats {
        flex-wrap: wrap;
        justify-content: center;
    }

    .info-grid {
        gap: var(--space-md);
    }

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

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}