/* ============================================
   Instagram ZKP Verification Page - Stylesheet
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    /* Background & Surface */
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1428;
    --bg-card: rgba(15, 20, 40, 0.85);
    --bg-glass: rgba(255, 255, 255, 0.04);
    --bg-glass-hover: rgba(255, 255, 255, 0.07);

    /* Instagram Gradient */
    --ig-purple: #833ab4;
    --ig-pink: #fd1d1d;
    --ig-orange: #fcb045;
    --ig-gradient: linear-gradient(45deg, #833ab4, #fd1d1d, #fcb045);
    --ig-gradient-subtle: linear-gradient(135deg, rgba(131, 58, 180, 0.15), rgba(253, 29, 29, 0.1), rgba(252, 176, 69, 0.08));

    /* Text */
    --text-primary: #e8eaf0;
    --text-secondary: #8b92a8;
    --text-muted: #555d75;

    /* Color Coding */
    --color-private: #ef4444;
    --color-private-bg: rgba(239, 68, 68, 0.1);
    --color-private-border: rgba(239, 68, 68, 0.3);
    --color-verified: #22c55e;
    --color-verified-bg: rgba(34, 197, 94, 0.1);
    --color-verified-border: rgba(34, 197, 94, 0.3);
    --color-transit: #f59e0b;
    --color-transit-bg: rgba(245, 158, 11, 0.1);
    --color-transit-border: rgba(245, 158, 11, 0.3);

    /* Split Panel */
    --left-glow: rgba(59, 130, 246, 0.06);
    --right-glow: rgba(131, 58, 180, 0.06);

    /* Borders & Shadows */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-medium: rgba(255, 255, 255, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
    --shadow-glow-ig: 0 0 40px rgba(131, 58, 180, 0.15), 0 0 80px rgba(253, 29, 29, 0.08);

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Font */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Fira Code', 'Consolas', monospace;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.35s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* --- Background Orbs --- */
.bg-gradient-orbs {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--ig-purple);
    top: -150px;
    right: -100px;
    animation: orbFloat1 20s ease-in-out infinite;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--ig-pink);
    bottom: -100px;
    left: -100px;
    animation: orbFloat2 25s ease-in-out infinite;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: var(--ig-orange);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: orbFloat3 18s ease-in-out infinite;
}

@keyframes orbFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-60px, 40px) scale(1.1); }
    66% { transform: translate(30px, -30px) scale(0.9); }
}

@keyframes orbFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, -30px) scale(1.05); }
    66% { transform: translate(-40px, 20px) scale(0.95); }
}

@keyframes orbFloat3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.2; }
    50% { transform: translate(-50%, -50%) scale(1.15); opacity: 0.35; }
}

/* --- Header --- */
.ig-header {
    position: relative;
    z-index: 10;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-subtle);
    background: rgba(10, 14, 26, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.ig-header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.back-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--text-primary);
}

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

.ig-camera-icon {
    font-size: 1.6rem;
    background: var(--ig-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ig-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--ig-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.header-spacer {
    width: 140px;
}

/* --- Main --- */
.ig-main {
    position: relative;
    z-index: 5;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 60px;
    min-height: calc(100vh - 130px);
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* --- No Identity Warning Card --- */
.no-identity-card {
    text-align: center;
    padding: 48px 40px;
    background: var(--bg-card);
    border: 1px solid var(--color-transit-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    max-width: 520px;
    width: 100%;
    animation: fadeSlideUp 0.6s ease;
}

.warning-icon-wrap {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-transit-bg);
    border: 2px solid var(--color-transit-border);
    border-radius: 50%;
    font-size: 2rem;
    color: var(--color-transit);
    animation: pulse 2s ease-in-out infinite;
}

.no-identity-card h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-transit);
    margin-bottom: 12px;
}

.no-identity-card p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: 1rem;
    line-height: 1.6;
}

.btn-create-identity {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-create-identity:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.3);
}

/* --- Age Gate Card --- */
.age-gate-card {
    text-align: center;
    padding: 56px 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: var(--shadow-glow-ig);
    max-width: 600px;
    width: 100%;
    animation: fadeSlideUp 0.8s ease;
    position: relative;
    overflow: hidden;
}

.age-gate-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--ig-gradient);
}

.age-gate-icon {
    margin-bottom: 28px;
}

.shield-container {
    position: relative;
    display: inline-block;
    width: 90px;
    height: 90px;
}

.shield-icon {
    font-size: 4rem;
    background: var(--ig-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shieldPulse 3s ease-in-out infinite;
}

.lock-overlay {
    position: absolute;
    bottom: 4px;
    right: -2px;
    font-size: 1.3rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    padding: 4px;
    border-radius: 50%;
}

@keyframes shieldPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.06); }
}

.age-gate-title {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.age-gate-title .highlight {
    background: var(--ig-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.age-gate-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 36px;
}

/* Verify Button */
.btn-verify-age {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    background: var(--ig-gradient);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    overflow: hidden;
}

.btn-verify-age:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(131, 58, 180, 0.35);
}

.btn-verify-age:active {
    transform: translateY(-1px);
}

.btn-shimmer {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 200%; }
}

.age-gate-footnote {
    margin-top: 24px;
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

/* --- ZKP Verification Panel --- */
.zkp-panel {
    width: 100%;
    max-width: 1100px;
    animation: fadeSlideUp 0.5s ease;
}

.zkp-panel-header {
    text-align: center;
    margin-bottom: 32px;
}

.zkp-panel-header h2 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 8px;
}

.zkp-panel-header h2 i {
    background: var(--ig-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.zkp-panel-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Split Container --- */
.split-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
    min-height: 460px;
}

/* Split Headers */
.split-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    font-weight: 700;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--border-subtle);
}

.left-header {
    background: rgba(59, 130, 246, 0.06);
    border-bottom-color: rgba(59, 130, 246, 0.15);
}

.left-header i:first-child {
    color: #3b82f6;
}

.right-header {
    background: rgba(131, 58, 180, 0.06);
    border-bottom-color: rgba(131, 58, 180, 0.15);
}

.right-header i:first-child {
    background: var(--ig-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.1rem;
}

.privacy-badge {
    margin-left: auto;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.private-badge {
    background: var(--color-private-bg);
    color: var(--color-private);
    border: 1px solid var(--color-private-border);
}

.public-badge {
    background: var(--color-verified-bg);
    color: var(--color-verified);
    border: 1px solid var(--color-verified-border);
}

/* --- Left Side: Wallet --- */
.split-left {
    background: linear-gradient(180deg, var(--left-glow), transparent 60%);
}

.wallet-content {
    padding: 20px;
}

.data-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    margin-bottom: 8px;
    background: var(--bg-glass);
    border: 1px solid var(--color-private-border);
    border-radius: var(--radius-sm);
    transition: opacity 0.5s ease, transform 0.5s ease;
    transform: translateX(-20px);
}

.data-item.visible {
    opacity: 1 !important;
    transform: translateX(0);
}

.data-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 80px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-value {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-private);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.data-value-age {
    font-size: 1.2rem;
    font-weight: 700;
}

.data-value-key {
    font-size: 0.72rem;
}

.data-item-age {
    border-color: var(--color-private);
    background: rgba(239, 68, 68, 0.08);
}

.data-privacy {
    color: var(--color-private);
    font-size: 0.85rem;
    opacity: 0.7;
}

/* Math Operation */
.math-operation {
    margin-top: 16px;
    padding: 16px;
    background: rgba(245, 158, 11, 0.06);
    border: 1px solid var(--color-transit-border);
    border-radius: var(--radius-sm);
    transition: opacity 0.5s ease;
}

.math-operation.visible {
    opacity: 1 !important;
}

.math-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-transit);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.math-formula {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-transit);
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    text-align: center;
    min-height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.formula-text {
    display: inline-block;
}

/* Proof Generation */
.proof-generation {
    margin-top: 12px;
    padding: 16px;
    background: rgba(34, 197, 94, 0.06);
    border: 1px solid var(--color-verified-border);
    border-radius: var(--radius-sm);
    transition: opacity 0.5s ease;
}

.proof-generation.visible {
    opacity: 1 !important;
}

.proof-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-verified);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.proof-hash {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--color-verified);
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    word-break: break-all;
    line-height: 1.5;
    min-height: 42px;
    display: flex;
    align-items: center;
}

.hash-text {
    display: inline-block;
}

/* --- Center Divider --- */
.split-divider {
    width: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    background: rgba(0, 0, 0, 0.3);
    border-left: 1px solid var(--border-subtle);
    border-right: 1px solid var(--border-subtle);
}

.divider-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: linear-gradient(180deg,
        transparent,
        var(--border-medium) 20%,
        var(--border-medium) 80%,
        transparent);
    transform: translateX(-50%);
}

.divider-arrow {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.divider-arrow.active {
    opacity: 1;
}

.arrow-track {
    position: relative;
    width: 100%;
    height: 4px;
    background: rgba(245, 158, 11, 0.2);
    border-radius: 2px;
    overflow: visible;
}

.arrow-payload {
    position: absolute;
    left: -10px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    background: var(--color-transit);
    color: #000;
    border-radius: 20px;
    font-size: 0.65rem;
    font-weight: 700;
    white-space: nowrap;
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
    transition: left 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.arrow-payload.animate {
    left: calc(100% - 60px);
}

.arrow-payload i {
    font-size: 0.7rem;
}

.divider-label {
    position: relative;
    z-index: 2;
    margin-top: 12px;
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--color-transit);
    text-align: center;
    line-height: 1.3;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.divider-arrow.active ~ .divider-label {
    opacity: 1;
}

.blocked-data {
    position: relative;
    z-index: 2;
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 0.58rem;
    font-weight: 700;
    color: var(--color-private);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    transition: opacity 0.5s ease;
}

.blocked-data.visible {
    opacity: 1 !important;
}

.blocked-data i {
    font-size: 1.2rem;
    margin-bottom: 2px;
}

/* --- Right Side: Instagram View --- */
.split-right {
    background: linear-gradient(180deg, var(--right-glow), transparent 60%);
}

.instagram-content {
    padding: 20px;
}

.ig-data-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    margin-bottom: 8px;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
}

.ig-data-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 80px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ig-data-value {
    font-family: var(--font-mono);
    font-size: 1rem;
    flex: 1;
}

.ig-hidden-value {
    color: var(--color-private);
    font-size: 1.4rem;
}

.ig-sees-label {
    margin-top: 20px;
    margin-bottom: 14px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: opacity 0.5s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ig-sees-label.visible {
    opacity: 1 !important;
}

.ig-sees-label i {
    color: var(--color-verified);
    animation: bounce 1s ease infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(4px); }
}

/* Received Proof */
.ig-proof-received {
    padding: 16px;
    background: var(--color-verified-bg);
    border: 1px solid var(--color-verified-border);
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
    transition: opacity 0.5s ease;
}

.ig-proof-received.visible {
    opacity: 1 !important;
}

.ig-proof-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-verified);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.ig-proof-hash {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--color-verified);
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    word-break: break-all;
    line-height: 1.5;
}

/* Verification */
.ig-verification {
    padding: 16px;
    text-align: center;
    transition: opacity 0.5s ease;
}

.ig-verification.visible {
    opacity: 1 !important;
}

.verification-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.verification-spinner i {
    font-size: 1.3rem;
    color: var(--color-transit);
}

.verification-result {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.result-checkmark {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    animation: popIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.result-checkmark.success {
    background: var(--color-verified-bg);
    border: 2px solid var(--color-verified);
    color: var(--color-verified);
    box-shadow: 0 0 30px rgba(34, 197, 94, 0.3);
}

.result-checkmark.failure {
    background: var(--color-private-bg);
    border: 2px solid var(--color-private);
    color: var(--color-private);
    box-shadow: 0 0 30px rgba(239, 68, 68, 0.3);
}

.result-mini-text {
    font-size: 0.8rem;
    font-weight: 600;
}

.result-mini-text.success {
    color: var(--color-verified);
}

.result-mini-text.failure {
    color: var(--color-private);
}

@keyframes popIn {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

/* --- Result Banner --- */
.result-banner {
    margin-top: 28px;
    padding: 24px 32px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: flex-start;
    gap: 16px;
    animation: fadeSlideUp 0.6s ease;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.result-banner.success {
    background: var(--color-verified-bg);
    border: 1px solid var(--color-verified-border);
    box-shadow: 0 0 40px rgba(34, 197, 94, 0.1);
}

.result-banner.failure {
    background: var(--color-private-bg);
    border: 1px solid var(--color-private-border);
    box-shadow: 0 0 40px rgba(239, 68, 68, 0.1);
}

.result-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
    line-height: 1;
}

.result-text {
    font-size: 0.95rem;
    line-height: 1.6;
    font-weight: 500;
}

.result-banner.success .result-text {
    color: var(--color-verified);
}

.result-banner.failure .result-text {
    color: var(--color-private);
}

/* --- Welcome Screen --- */
.welcome-screen {
    margin-top: 28px;
    animation: fadeSlideUp 0.8s ease;
}

.welcome-inner {
    text-align: center;
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid var(--color-verified-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.welcome-ig-icon {
    font-size: 3rem;
    background: var(--ig-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.welcome-inner h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.welcome-inner p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.welcome-feed-preview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    max-width: 320px;
    margin: 0 auto;
}

.feed-item {
    aspect-ratio: 1;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1.5rem;
    animation: feedPop 0.4s ease both;
}

.feed-item:nth-child(1) { animation-delay: 0s; }
.feed-item:nth-child(2) { animation-delay: 0.1s; }
.feed-item:nth-child(3) { animation-delay: 0.2s; }
.feed-item:nth-child(4) { animation-delay: 0.3s; }
.feed-item:nth-child(5) { animation-delay: 0.4s; }
.feed-item:nth-child(6) { animation-delay: 0.5s; }

@keyframes feedPop {
    0% { transform: scale(0); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

/* --- ZKP Actions --- */
.zkp-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 28px;
    animation: fadeSlideUp 0.5s ease;
}

.btn-restart {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-restart:hover {
    background: var(--bg-glass-hover);
    border-color: var(--text-secondary);
}

.btn-update-identity {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-update-identity:hover {
    color: var(--text-primary);
    border-color: var(--border-medium);
}

/* --- Footer --- */
.ig-footer {
    position: relative;
    z-index: 5;
    text-align: center;
    padding: 24px;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.ig-footer p {
    margin-bottom: 6px;
}

.ig-footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.ig-footer a:hover {
    color: var(--text-primary);
}

/* --- Animations --- */
@keyframes fadeSlideUp {
    0% {
        opacity: 0;
        transform: translateY(24px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.3); }
    50% { box-shadow: 0 0 0 12px rgba(245, 158, 11, 0); }
}

/* Glow pulse for successful verification */
@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(34, 197, 94, 0.2); }
    50% { box-shadow: 0 0 40px rgba(34, 197, 94, 0.4); }
}

/* Hash scramble visual shimmer */
@keyframes hashShimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

.hash-text.scrambling {
    background: linear-gradient(90deg,
        var(--color-verified) 0%,
        #86efac 25%,
        var(--color-verified) 50%,
        #86efac 75%,
        var(--color-verified) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: hashShimmer 1s linear infinite;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .split-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }

    .split-divider {
        width: 100%;
        height: 80px;
        flex-direction: row;
        gap: 16px;
        padding: 12px 20px;
        border-left: none;
        border-right: none;
        border-top: 1px solid var(--border-subtle);
        border-bottom: 1px solid var(--border-subtle);
    }

    .divider-line {
        top: 50%;
        bottom: auto;
        left: 0;
        right: 0;
        width: 100%;
        height: 2px;
        transform: translateY(-50%);
        background: linear-gradient(90deg,
            transparent,
            var(--border-medium) 20%,
            var(--border-medium) 80%,
            transparent);
    }

    .divider-arrow {
        width: auto;
        height: auto;
    }

    .arrow-track {
        width: 120px;
        height: 4px;
    }

    .blocked-data {
        margin-top: 0;
        flex-direction: row;
    }

    .ig-header-inner {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }

    .header-spacer {
        display: none;
    }

    .back-link {
        order: 2;
    }

    .ig-logo {
        order: 1;
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 600px) {
    .ig-main {
        padding: 24px 16px 40px;
    }

    .age-gate-card {
        padding: 36px 24px;
    }

    .age-gate-title {
        font-size: 1.2rem;
    }

    .btn-verify-age {
        padding: 16px 28px;
        font-size: 0.95rem;
    }

    .wallet-content,
    .instagram-content {
        padding: 14px;
    }

    .data-label,
    .ig-data-label {
        min-width: 60px;
        font-size: 0.7rem;
    }

    .data-value {
        font-size: 0.8rem;
    }

    .zkp-actions {
        flex-direction: column;
    }

    .result-banner {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }

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

@media (max-width: 400px) {
    .ig-logo-text {
        font-size: 1.25rem;
    }

    .shield-icon {
        font-size: 3rem;
    }

    .shield-container {
        width: 70px;
        height: 70px;
    }
}