/* ========================================
   ROBLOX GIVEAWAY - GLOBAL DESIGN SYSTEM
   ======================================== */

/* Google Fonts import */
@import url('https://fonts.googleapis.com/css2?family=Fredoka+One&family=Poppins:wght@400;500;600;700;800&display=swap');

/* ---- CSS Custom Properties (Design Tokens) ---- */
:root {
    /* Typography */
    --font-display: 'Fredoka One', cursive;
    --font-body: 'Poppins', sans-serif;

    /* 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: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.15);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.2);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.3);
    --shadow-glow: 0 0 30px rgba(255,255,255,0.15);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Z-Index */
    --z-particles: 1;
    --z-waves: 2;
    --z-content: 10;
    --z-modal: 100;
    --z-confetti: 200;
}

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

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

body {
    font-family: var(--font-body);
    overflow-x: hidden;
    min-height: 100vh;
    color: #ffffff;
    position: relative;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ---- Screen System ---- */
.screen {
    display: none;
    min-height: 100vh;
    width: 100%;
    position: relative;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-md);
}

.screen.active {
    display: flex;
    animation: screenFadeIn 0.6s ease forwards;
}

.content-wrapper {
    position: relative;
    z-index: var(--z-content);
    max-width: 600px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-lg);
}

/* ---- Glassmorphic Cards ---- */
.card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    width: 100%;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* ---- Hero Section ---- */
.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    border: 1px solid rgba(255,255,255,0.2);
    animation: float 3s ease-in-out infinite;
}

.hero-title {
    font-size: clamp(2rem, 6vw, 3.5rem);
    text-shadow: 0 4px 20px rgba(0,0,0,0.4);
    line-height: 1.1;
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: clamp(1rem, 3vw, 1.4rem);
    font-weight: 500;
    opacity: 0.9;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

/* ---- Prize Card ---- */
.prize-card {
    text-align: left;
}

.prize-icon {
    font-size: 3rem;
    margin-bottom: var(--space-sm);
}

.prize-card h3 {
    font-family: var(--font-body);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.prize-list li {
    padding: var(--space-sm) 0;
    padding-left: var(--space-lg);
    position: relative;
    font-size: 0.95rem;
    opacity: 0.9;
}

.prize-list li::before {
    content: '✅';
    position: absolute;
    left: 0;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-xl);
    font-family: var(--font-display);
    font-size: 1.15rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::after {
    opacity: 1;
}

.btn:active {
    transform: scale(0.96);
}

.btn-primary {
    background: linear-gradient(135deg, #FF6B35, #FF8F5E);
    color: white;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
    font-size: 1.2rem;
    padding: var(--space-lg) var(--space-2xl);
}

.btn-primary:hover {
    box-shadow: 0 6px 30px rgba(255, 107, 53, 0.6);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background: linear-gradient(135deg, #25D366, #128C7E);
    color: white;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    font-size: 1.2rem;
    padding: var(--space-lg) var(--space-2xl);
    width: 100%;
    max-width: 400px;
}

.btn-whatsapp:hover {
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
    transform: translateY(-2px);
}

.btn-whatsapp svg {
    width: 24px;
    height: 24px;
    fill: white;
}

.btn-copy {
    background: rgba(255,255,255,0.15);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
}

.btn-copy:hover {
    background: rgba(255,255,255,0.25);
}

.btn-copy.copied {
    background: linear-gradient(135deg, #25D366, #128C7E) !important;
    border-color: transparent;
}

/* Glow animation on buttons */
.btn-glow {
    animation: btnPulse 2s ease-in-out infinite;
}

/* ---- Pairing Section ---- */
.pairing-card {
    padding: var(--space-2xl);
}

.pairing-icon {
    font-size: 3.5rem;
    margin-bottom: var(--space-sm);
}

.pairing-card h2 {
    margin-bottom: var(--space-sm);
}

.pairing-description {
    font-size: 0.95rem;
    opacity: 0.85;
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

/* Timer Bar */
.timer-container {
    width: 100%;
    max-width: 400px;
    margin: var(--space-lg) auto;
}

.timer-bar-bg {
    width: 100%;
    height: 6px;
    background: rgba(255,255,255,0.15);
    border-radius: 3px;
    overflow: hidden;
}

.timer-bar {
    height: 100%;
    background: linear-gradient(90deg, #25D366, #00E676);
    border-radius: 3px;
    width: 100%;
    transition: width 1s linear;
}

.timer-bar.expiring {
    background: linear-gradient(90deg, #FF6B35, #FF5722);
}

.timer-text {
    display: block;
    font-size: 0.8rem;
    opacity: 0.7;
    margin-top: var(--space-xs);
}

/* Status */
.status-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin: var(--space-md) 0;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.2);
    border-top-color: #25D366;
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.spinner.hidden {
    display: none;
}

.status-text {
    font-size: 0.9rem;
    opacity: 0.8;
}

.status-text.success {
    color: #25D366;
    opacity: 1;
    font-weight: 600;
}

.status-text.error {
    color: #FF5722;
    opacity: 1;
    font-weight: 600;
}

/* Steps Guide */
.steps-guide {
    width: 100%;
    margin-top: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

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

.step-number {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,0.15);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.9rem;
}

.step-text {
    font-size: 0.9rem;
    opacity: 0.85;
}

/* ---- Success Section ---- */
.success-card {
    padding: var(--space-2xl);
}

.success-icon {
    font-size: 4rem;
    animation: successBounce 0.6s ease;
}

.success-card h2 {
    font-size: 2rem;
    background: linear-gradient(135deg, #FFD700, #FFA000);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.success-subtitle {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: var(--space-md);
}

.credentials-card {
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    width: 100%;
    margin: var(--space-md) 0;
}

.credential-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    font-size: 0.95rem;
}

.credential-row + .credential-row {
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: var(--space-sm);
    padding-top: var(--space-md);
}

.credential-label {
    font-weight: 600;
    white-space: nowrap;
}

.credential-value {
    font-family: 'Courier New', monospace;
    background: rgba(255,255,255,0.08);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    word-break: break-all;
    flex: 1;
    text-align: left;
}

.success-note {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-top: var(--space-md);
}

/* ---- Back Button ---- */
.back-button {
    position: fixed;
    top: var(--space-lg);
    left: var(--space-lg);
    z-index: var(--z-content);
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-normal);
}

.back-button:hover {
    background: rgba(255,255,255,0.2);
    transform: scale(1.1);
}

/* ---- Game Selector Cards (Index Page) ---- */
.game-selector-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    width: 100%;
    max-width: 900px;
}

@media (min-width: 768px) {
    .game-selector-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.game-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-height: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-2xl) var(--space-xl);
    gap: var(--space-md);
}

.game-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.3);
    transition: background var(--transition-normal);
}

.game-card:hover {
    transform: translateY(-8px) scale(1.02);
}

.game-card:hover::before {
    background: rgba(0,0,0,0.15);
}

.game-card > * {
    position: relative;
    z-index: 2;
}

.game-card-icon {
    font-size: 4rem;
    filter: drop-shadow(0 4px 10px rgba(0,0,0,0.3));
}

.game-card-title {
    font-size: 1.5rem;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.game-card-desc {
    font-size: 0.9rem;
    opacity: 0.85;
}

.game-card-btn {
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.3);
    padding: var(--space-sm) var(--space-xl);
    border-radius: var(--radius-xl);
    font-family: var(--font-display);
    font-size: 1rem;
    color: white;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.game-card:hover .game-card-btn {
    background: rgba(255,255,255,0.35);
    transform: scale(1.05);
}

.card-blox-fruits {
    background: linear-gradient(135deg, #0d47a1, #1565c0, #1e88e5, #FF6B35);
    background-size: 200% 200%;
    animation: gradientShift 5s ease infinite;
    border: 2px solid rgba(255,107,53,0.3);
}

.card-grow-garden {
    background: linear-gradient(135deg, #1b5e20, #2e7d32, #43a047, #FFC107);
    background-size: 200% 200%;
    animation: gradientShift 5s ease infinite;
    border: 2px solid rgba(76,175,80,0.3);
}

/* ---- Particles Container ---- */
.particles {
    position: fixed;
    inset: 0;
    z-index: var(--z-particles);
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    pointer-events: none;
    animation: particleFloat linear infinite;
    opacity: 0.6;
    font-size: 1.5rem;
}

/* ---- Confetti Container ---- */
.confetti-container {
    position: fixed;
    inset: 0;
    z-index: var(--z-confetti);
    pointer-events: none;
    overflow: hidden;
}

.confetti-piece {
    position: absolute;
    width: 10px;
    height: 10px;
    top: -10px;
    animation: confettiFall linear forwards;
}

/* ---- Waves (Blox Fruits) ---- */
.waves-container {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--z-waves);
    pointer-events: none;
    height: 150px;
}

.wave {
    position: absolute;
    bottom: 0;
    left: -50%;
    width: 200%;
    height: 100%;
    background-repeat: repeat-x;
    animation: waveMove linear infinite;
}

/* ---- Leaves (Grow Garden) ---- */
.leaf {
    position: absolute;
    pointer-events: none;
    animation: leafFall linear infinite;
    font-size: 1.5rem;
}

/* ---- Error Screen ---- */
.error-container {
    text-align: center;
}

.error-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.btn-retry {
    background: linear-gradient(135deg, #FF6B35, #FF8F5E);
    color: white;
    margin-top: var(--space-lg);
}

/* ==============================
   ANIMATIONS
   ============================== */

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes btnPulse {
    0%, 100% { box-shadow: 0 4px 20px rgba(255,107,53,0.4); }
    50% { box-shadow: 0 4px 40px rgba(255,107,53,0.7), 0 0 60px rgba(255,107,53,0.2); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% {
        transform: translateY(-100px) rotate(720deg);
        opacity: 0;
    }
}

@keyframes confettiFall {
    0% {
        transform: translateY(0) rotateX(0) rotateZ(0);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotateX(720deg) rotateZ(360deg);
        opacity: 0;
    }
}

@keyframes waveMove {
    0% { transform: translateX(0); }
    100% { transform: translateX(50%); }
}

@keyframes leafFall {
    0% {
        transform: translateY(-100px) rotate(0deg) translateX(0);
        opacity: 0;
    }
    10% { opacity: 0.8; }
    100% {
        transform: translateY(100vh) rotate(720deg) translateX(100px);
        opacity: 0;
    }
}

@keyframes successBounce {
    0% { transform: scale(0); }
    50% { transform: scale(1.3); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); }
}

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

/* ---- Phone Input Screen ---- */
.phone-card {
    padding: var(--space-2xl);
    text-align: center;
}

.phone-icon {
    font-size: 3.5rem;
    margin-bottom: var(--space-sm);
    animation: float 3s ease-in-out infinite;
}

.phone-description {
    font-size: 0.95rem;
    opacity: 0.85;
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.phone-input-wrap {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.07);
    border: 1.5px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-sm);
    transition: border-color 0.2s ease;
}

.phone-input-wrap:focus-within {
    border-color: rgba(255, 255, 255, 0.45);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.06);
}

.phone-prefix {
    padding: 14px var(--space-md);
    background: rgba(255, 255, 255, 0.08);
    font-weight: 700;
    font-size: 0.95rem;
    border-right: 1px solid rgba(255, 255, 255, 0.12);
    white-space: nowrap;
    user-select: none;
}

.phone-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    padding: 14px var(--space-md);
    color: #fff;
    font-family: var(--font-body);
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    width: 100%;
}

.phone-input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.phone-error {
    font-size: 0.82rem;
    color: #FF6B6B;
    min-height: 20px;
    margin-bottom: var(--space-sm);
    text-align: left;
}

/* ---- Pairing Code Display ---- */
.code-container {
    margin: var(--space-md) 0 var(--space-lg);
}

.code-display {
    font-family: 'Fredoka One', 'Courier New', monospace;
    font-size: clamp(2rem, 8vw, 3rem);
    letter-spacing: 8px;
    background: rgba(0, 0, 0, 0.35);
    border: 2px solid rgba(255, 215, 0, 0.35);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-xl);
    display: inline-block;
    color: #FFD700;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
    animation: codePulse 2.5s ease-in-out infinite;
    min-width: 200px;
    text-align: center;
}

.code-display.loading {
    color: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.1);
    text-shadow: none;
    animation: none;
    letter-spacing: 4px;
}

@keyframes codePulse {
    0%, 100% { box-shadow: 0 0 12px rgba(255, 215, 0, 0.1); }
    50%       { box-shadow: 0 0 28px rgba(255, 215, 0, 0.25); }
}

.code-hint {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-top: var(--space-sm);
}

/* ---- Code Action Buttons ---- */
.code-actions {
    display: none;
    flex-direction: column;
    gap: var(--space-sm);
    width: 100%;
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.4s ease;
}

.code-actions.visible {
    display: flex;
}

.btn-copy-code {
    background: rgba(255, 255, 255, 0.1);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px var(--space-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease;
    font-family: var(--font-body);
}

.btn-copy-code:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-open-whatsapp {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, #25D366, #128C7E) !important;
    border: none !important;
    color: #fff !important;
    font-size: 1rem;
    font-weight: 700;
    padding: 14px var(--space-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: filter 0.2s ease, transform 0.15s ease;
}

.btn-open-whatsapp:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}


/* ---- Out of Stock Screen ---- */

.outofstock-card {
    padding: var(--space-2xl);
    text-align: center;
}

.outofstock-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
    animation: float 3s ease-in-out infinite;
}

.outofstock-title {
    font-size: 1.8rem;
    background: linear-gradient(135deg, #FF9800, #FF5722, #FFD700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
}

.outofstock-message {
    font-size: 1.05rem;
    opacity: 0.9;
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

.outofstock-submessage {
    font-size: 0.9rem;
    opacity: 0.6;
    margin-bottom: var(--space-xl);
}

/* ==============================
   RESPONSIVE - MOBILE-FIRST
   Maximum responsiveness for all
   mobile and tablet devices
   ============================== */

/* --- Safe area insets for notched devices (iPhone X+, etc.) --- */
@supports (padding: env(safe-area-inset-top)) {
    .screen {
        padding-top: calc(var(--space-xl) + env(safe-area-inset-top));
        padding-bottom: calc(var(--space-xl) + env(safe-area-inset-bottom));
        padding-left: calc(var(--space-md) + env(safe-area-inset-left));
        padding-right: calc(var(--space-md) + env(safe-area-inset-right));
    }

    .footer-disclaimer {
        padding-bottom: calc(var(--space-md) + env(safe-area-inset-bottom));
    }

    .back-button {
        top: calc(var(--space-lg) + env(safe-area-inset-top));
        left: calc(var(--space-lg) + env(safe-area-inset-left));
    }
}

/* --- Large tablets (portrait) up to 1024px --- */
@media (max-width: 1024px) {
    .content-wrapper {
        max-width: 560px;
    }

    .game-selector-grid {
        max-width: 700px;
    }

    .game-card {
        min-height: 280px;
    }
}

/* --- Tablets (portrait) up to 768px --- */
@media (max-width: 768px) {
    .screen {
        padding: var(--space-xl) var(--space-md);
    }

    .content-wrapper {
        max-width: 520px;
        gap: var(--space-md);
    }

    .game-selector-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        gap: var(--space-lg);
    }

    .game-card {
        min-height: 260px;
        padding: var(--space-xl) var(--space-lg);
    }

    .game-card-icon {
        font-size: 3.5rem;
    }

    .hero-title {
        font-size: clamp(1.8rem, 6vw, 2.8rem);
    }

    .hero-subtitle {
        font-size: clamp(0.95rem, 2.5vw, 1.2rem);
    }

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

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

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

/* --- Small tablets / large phones (600px) --- */
@media (max-width: 600px) {
    .content-wrapper {
        max-width: 100%;
    }

    .game-card {
        min-height: 240px;
        padding: var(--space-xl) var(--space-md);
    }

    .game-card-title {
        font-size: 1.35rem;
    }

    .btn-primary,
    .btn-whatsapp {
        font-size: 1.1rem;
        padding: var(--space-md) var(--space-xl);
        width: 100%;
        max-width: 380px;
    }

    .btn-copy {
        width: 100%;
        max-width: 380px;
    }

    .timer-container {
        max-width: 100%;
    }
}

/* --- Phablets (576px) --- */
@media (max-width: 576px) {
    .screen {
        padding: var(--space-lg) var(--space-md);
    }

    .hero-badge {
        font-size: 0.78rem;
        padding: var(--space-xs) var(--space-md);
        letter-spacing: 1.5px;
    }

    .prize-icon {
        font-size: 2.5rem;
    }

    .prize-card h3 {
        font-size: 1rem;
    }

    .prize-list li {
        font-size: 0.9rem;
        padding-left: var(--space-md);
    }

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

    .credential-row {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    .credential-value {
        width: 100%;
    }

    .steps-guide {
        gap: var(--space-sm);
    }

    .step {
        gap: var(--space-sm);
    }

    .step-text {
        font-size: 0.85rem;
    }

    .step-number {
        width: 28px;
        height: 28px;
        font-size: 0.8rem;
    }
}

/* --- Standard phones (480px) --- */
@media (max-width: 480px) {
    .screen {
        padding: var(--space-lg) var(--space-sm);
    }

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

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

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

    .btn {
        font-size: 1rem;
        padding: var(--space-md) var(--space-lg);
        border-radius: var(--radius-lg);
    }

    .btn-primary,
    .btn-whatsapp {
        font-size: 1.05rem;
        padding: var(--space-md) var(--space-lg);
    }

    .hero-title {
        font-size: 1.8rem;
    }

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

    .game-card {
        min-height: 220px;
        padding: var(--space-lg) var(--space-md);
        border-radius: var(--radius-md);
    }

    .game-card-icon {
        font-size: 3rem;
    }

    .game-card-title {
        font-size: 1.25rem;
    }

    .game-card-desc {
        font-size: 0.85rem;
    }

    .game-card-btn {
        font-size: 0.9rem;
        padding: var(--space-xs) var(--space-lg);
    }

    .pairing-icon {
        font-size: 2.8rem;
    }

    .pairing-description {
        font-size: 0.88rem;
    }

    .success-icon {
        font-size: 3.2rem;
    }

    .success-card h2 {
        font-size: 1.6rem;
    }

    .success-subtitle {
        font-size: 0.92rem;
    }

    .success-note {
        font-size: 0.8rem;
    }

    .back-button {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
        top: var(--space-md);
        left: var(--space-md);
    }

    .footer-disclaimer {
        font-size: 0.7rem;
        padding: var(--space-sm) var(--space-md);
    }
}

/* --- Small phones (360px) --- */
@media (max-width: 360px) {
    html {
        font-size: 14px;
    }

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

    .hero-title {
        font-size: 1.6rem;
    }

    .hero-badge {
        font-size: 0.7rem;
        letter-spacing: 1px;
        padding: 4px 12px;
    }

    .game-card {
        min-height: 200px;
        padding: var(--space-md) var(--space-sm);
        gap: var(--space-sm);
    }

    .game-card-icon {
        font-size: 2.5rem;
    }

    .game-card-title {
        font-size: 1.15rem;
    }

    .game-card-desc {
        font-size: 0.8rem;
    }

    .btn-primary,
    .btn-whatsapp {
        font-size: 0.95rem;
        padding: 12px var(--space-md);
    }

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

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

    .credential-label {
        font-size: 0.85rem;
    }

    .credential-value {
        font-size: 0.82rem;
        padding: 4px 8px;
    }
}

/* --- Ultra-small phones (320px - iPhone SE, etc.) --- */
@media (max-width: 320px) {
    html {
        font-size: 13px;
    }

    .hero-title {
        font-size: 1.4rem;
    }

    .content-wrapper {
        gap: var(--space-sm);
    }

    .game-card {
        min-height: 180px;
    }

    .btn {
        font-size: 0.9rem;
    }

    .prize-list li {
        font-size: 0.82rem;
    }
}

/* --- Landscape orientation on phones --- */
@media (max-height: 500px) and (orientation: landscape) {
    .screen {
        padding: var(--space-md) var(--space-xl);
        min-height: auto;
    }

    .content-wrapper {
        gap: var(--space-sm);
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-badge {
        margin-bottom: 0;
    }

    .game-selector-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: var(--space-md);
    }

    .game-card {
        min-height: 180px;
        padding: var(--space-md);
    }

    .game-card-icon {
        font-size: 2rem;
    }

    .game-card-title {
        font-size: 1rem;
    }

    .game-card-desc {
        display: none;
    }

    .prize-card {
        max-height: 200px;
        overflow-y: auto;
    }

    .footer-disclaimer {
        position: relative;
    }
}

/* --- Tablet landscape --- */
@media (min-width: 768px) and (max-width: 1024px) and (orientation: landscape) {
    .game-selector-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: var(--space-lg);
    }

    .content-wrapper {
        max-width: 900px;
    }

    .game-card {
        min-height: 260px;
    }
}

/* --- Touch-specific improvements --- */
@media (hover: none) and (pointer: coarse) {
    /* Remove hover effects on touch devices for better UX */
    .game-card:hover {
        transform: none;
    }

    .game-card:active {
        transform: scale(0.97);
        transition: transform 0.1s ease;
    }

    .game-card:hover::before {
        background: rgba(0,0,0,0.3);
    }

    .game-card:active::before {
        background: rgba(0,0,0,0.15);
    }

    .game-card:hover .game-card-btn {
        background: rgba(255,255,255,0.2);
        transform: none;
    }

    .card:hover {
        transform: none;
        box-shadow: var(--shadow-lg);
    }

    .btn:hover::after {
        opacity: 0;
    }

    .btn:active {
        transform: scale(0.95);
    }

    /* Larger tap targets for mobile */
    .btn {
        min-height: 48px;
    }

    .back-button {
        min-width: 44px;
        min-height: 44px;
    }

    .step {
        min-height: 44px;
    }
}

/* --- High DPI / Retina adjustments --- */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .card {
        border-width: 0.5px;
    }

    .hero-badge {
        border-width: 0.5px;
    }
}

/* --- Prefer reduced motion --- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}