/*
 * ActProof.ai – Shell app + Landing
 * - top-nav: usato su (quasi) tutte le pagine.
 * - Landing: solo index → stili sotto main.hero-section.
 * Variabili globali e reset: design-system.css. Hero dashboard: dashboard.css (.container .hero-section).
 */

/* ============================================
   Theme variables (solo estensioni; base in design-system.css)
   ============================================ */

:root {
    /* Palette tema scuro (nav + landing) */
    --obsidian: #050505;
    --obsidian-elevated: #0A0A0A;
    --electric-violet: #8B5CF6;
    --deep-purple: #2D1B4E;
    --indigo: #6366F1;
    --border-hairline: #1A1A1A;
    --border-elevated: #222222;
    --letter-spacing-tight: -0.022em;
    --spacing-8: 8px;
    --spacing-10: 10px;
    --spacing-12: 12px;
    --spacing-16: 16px;
    --spacing-20: 20px;
    --spacing-24: 24px;
    --spacing-32: 32px;
    --spacing-48: 48px;
    --spacing-64: 64px;
    --border-radius: 12px;
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Override body when using this theme */
body.theme-homepage {
    background-color: var(--obsidian);
    color: var(--text-primary);
    letter-spacing: var(--letter-spacing-tight);
}

/* ============================================
   Navigation Bar (top-nav)
   ============================================ */

.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    padding: var(--spacing-16) var(--spacing-32);
    border-bottom: 1px solid var(--border-hairline);
    backdrop-filter: blur(10px);
    background: rgba(5, 5, 5, 0.8);
}

.top-nav .nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-32);
}

.top-nav .nav-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-8);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: var(--letter-spacing-tight);
}

.top-nav .nav-logo-img {
    height: 28px;
    width: auto;
    display: block;
    object-fit: contain;
}

.top-nav .nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-24);
    flex: 1;
    justify-content: center;
}

.top-nav .nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
    letter-spacing: var(--letter-spacing-tight);
    position: relative;
    padding: var(--spacing-8) 0;
}

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

.top-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--electric-violet);
    transition: width var(--transition);
}

.top-nav .nav-link:hover::after {
    width: 100%;
}

.top-nav .nav-link.active {
    color: var(--text-primary);
}

.top-nav .nav-link.active::after {
    width: 100%;
}

.top-nav .nav-auth {
    display: flex;
    align-items: center;
    gap: var(--spacing-32);
    flex-shrink: 0;
}

.top-nav .nav-auth [data-unauth-only] {
    display: flex;
    align-items: center;
    gap: var(--spacing-16);
    flex-shrink: 0;
}

.top-nav .nav-auth .nav-link,
.top-nav .nav-auth .nav-button {
    white-space: nowrap;
    flex-shrink: 0;
}

/* Login: ghost style – outline, stesso ingombro di Sign Up */
.top-nav .nav-auth [data-unauth-only] .nav-link:first-child {
    padding: var(--spacing-8) var(--spacing-20);
    border-radius: 9999px;
    border: 1px solid rgba(139, 92, 246, 0.4);
    background: transparent;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    transition: color var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.top-nav .nav-auth [data-unauth-only] .nav-link:first-child:hover {
    color: var(--text-primary);
    border-color: rgba(139, 92, 246, 0.7);
    background: rgba(139, 92, 246, 0.08);
    box-shadow: 0 0 20px -4px rgba(139, 92, 246, 0.25);
}

.top-nav .nav-auth [data-unauth-only] .nav-link:first-child::after {
    display: none;
}

/* Sign Up: pill, purple gradient, stesso ingombro di Login */
.top-nav .nav-button {
    background: linear-gradient(135deg, rgba(88, 28, 135, 0.85) 0%, rgba(67, 56, 202, 0.8) 50%, rgba(79, 70, 229, 0.75) 100%);
    color: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-8) var(--spacing-20);
    border-radius: 9999px;
    border: 1px solid rgba(139, 92, 246, 0.35);
    min-width: fit-content;
    font-weight: 600;
    letter-spacing: 0.02em;
    box-shadow: 0 2px 12px -2px rgba(88, 28, 135, 0.35);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

.top-nav .nav-button:hover {
    background: linear-gradient(135deg, rgba(107, 33, 168, 0.9) 0%, rgba(99, 102, 241, 0.85) 100%);
    color: var(--text-primary);
    border-color: rgba(139, 92, 246, 0.5);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px -4px rgba(88, 28, 135, 0.45);
}

.top-nav .nav-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 12px -2px rgba(88, 28, 135, 0.4);
}

.top-nav .nav-button::after {
    display: none;
}

/* User menu: avatar + name (same as profile) */
.nav-user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.6), rgba(99, 102, 241, 0.6));
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.nav-user-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.nav-user-avatar-initials {
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
}

/* Content offset when using fixed top-nav: push all body content down so .page-header and any first block are never under the nav. Works for every layout (nav→main, nav→container, nav→info-banner). */
body:has(.top-nav) {
    padding-top: 5.5rem; /* 88px – safe clearance for nav height + border */
}
/* When nav + info-banner are wrapped in .site-header (dashboard): single fixed header, no gap */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}
.site-header .top-nav {
    position: static;
    border-bottom: none; /* single border on info-banner below */
}
body:has(.site-header) {
    padding-top: 7.5rem; /* nav + info-banner height */
}
/* Fallback for browsers that don't support :has() */
@supports not (selector(:has(*))) {
    .top-nav + * {
        margin-top: 5.5rem;
    }
}

/* ============================================
   Background Gradients
   ============================================ */

.background-gradients {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float-orb 20s ease-in-out infinite;
}

.gradient-orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--electric-violet), transparent);
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0s;
}

.gradient-orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--deep-purple), transparent);
    bottom: -150px;
    right: 20%;
    animation-delay: -10s;
}

@keyframes float-orb {
    0%, 100% { transform: translate(-50%, 0) scale(1); }
    50% { transform: translate(-50%, -30px) scale(1.1); }
}

/* ============================================
   Floating Particles (for landing)
   ============================================ */

.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    opacity: 0.4;
    filter: drop-shadow(0 0 16px var(--electric-violet));
    animation: float-particle 30s ease-in-out infinite;
}

.particle img {
    width: 24px;
    height: 24px;
    display: block;
    filter: brightness(1.6) saturate(1.5) contrast(1.2);
}

@keyframes float-particle {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(20px, -30px) rotate(90deg); }
    50% { transform: translate(-15px, -50px) rotate(180deg); }
    75% { transform: translate(25px, -20px) rotate(270deg); }
}

/* ============================================
   Hero Section (landing only: main.hero-section)
   ============================================ */

main.hero-section {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 80px var(--spacing-32) var(--spacing-32);
    margin-top: 60px;
}

main.hero-section .hero-content {
    max-width: 800px;
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-24);
}

main.hero-section .hero-headline {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-12);
    width: 100%;
    flex-shrink: 0;
}

main.hero-section .hero-title-block,
main.hero-section .hero-subtitle-block {
    display: block;
    width: 100%;
    flex: 0 0 auto;
    text-align: center;
}

main.hero-section .hero-title-block .hero-title,
main.hero-section .hero-subtitle-block .hero-subtitle {
    display: block;
    width: 100%;
}

main.hero-section .hero-title {
    font-family: 'Roboto', sans-serif;
    font-size: 64px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: var(--letter-spacing-tight);
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    display: block;
}

main.hero-section .hero-subtitle {
    font-family: 'Roboto', sans-serif;
    font-size: 20px;
    font-weight: 400;
    color: var(--text-secondary);
    letter-spacing: var(--letter-spacing-tight);
    max-width: 600px;
    margin: 0 auto;
    display: block;
}

/* ============================================
   Scan Card (landing only) – aligned with header
   ============================================ */

main.hero-section .scan-card {
    width: 100%;
    max-width: 700px;
    position: relative;
    padding: var(--spacing-32);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-20);
    border-radius: 16px;
    overflow: hidden;
    background: rgba(10, 10, 14, 0.75);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(139, 92, 246, 0.22);
    box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.55);
    transition: border-color var(--transition), box-shadow var(--transition);
}

main.hero-section .scan-card:hover {
    border-color: rgba(139, 92, 246, 0.32);
    box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.55);
}

/* Shiny dot: velocità uniforme (più % sui lati lunghi, meno sui corti) + lento */
@keyframes shiny-dot-perimeter {
    0%   { left: 0;    top: 0;    transform: translate(-50%, -50%); }
    40%  { left: 100%; top: 0;    transform: translate(-50%, -50%); }
    50%  { left: 100%; top: 100%; transform: translate(-50%, -50%); }
    90%  { left: 0;    top: 100%; transform: translate(-50%, -50%); }
    100% { left: 0;    top: 0;    transform: translate(-50%, -50%); }
}

/* Subtle brightness pulse for premium cinematic feel */
@keyframes shiny-dot-glow {
    0%, 100% { opacity: 1; filter: brightness(1); }
    50%      { opacity: 1; filter: brightness(1.15); }
}

/* Search bar: gradiente viola + chiaro che è il punto di partenza */
main.hero-section .scan-input-wrapper {
    position: relative;
    overflow: visible;
    display: flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.28) 0%, rgba(99, 102, 241, 0.22) 50%, rgba(139, 92, 246, 0.2) 100%);
    border: 1px solid rgba(139, 92, 246, 0.5);
    border-radius: 12px;
    padding: var(--spacing-16) 20px;
    box-shadow: 0 4px 20px -4px rgba(139, 92, 246, 0.25);
    transition: border-color var(--transition), box-shadow var(--transition);
}

/* Moving glow dot: smaller, brighter, premium cinematic */
main.hero-section .scan-input-wrapper::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: radial-gradient(
        circle at 50% 50%,
        rgba(255, 255, 255, 1) 0%,
        rgba(224, 211, 255, 0.95) 35%,
        rgba(196, 181, 253, 0.6) 60%,
        transparent 75%
    );
    box-shadow:
        0 0 8px 2px rgba(255, 255, 255, 0.7),
        0 0 16px 4px rgba(196, 181, 253, 0.8),
        0 0 28px 8px rgba(139, 92, 246, 0.5);
    animation:
        shiny-dot-perimeter 16s linear infinite,
        shiny-dot-glow 3s ease-in-out infinite;
    pointer-events: none;
    z-index: 2;
}

main.hero-section .scan-input-wrapper:focus-within {
    border-color: rgba(139, 92, 246, 0.8);
    box-shadow: 0 4px 24px -4px rgba(139, 92, 246, 0.4);
}

main.hero-section .scan-input-wrapper .input-icon {
    color: rgba(255, 255, 255, 0.9);
    flex-shrink: 0;
}

main.hero-section .scan-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    font-family: var(--font-sans);
}

main.hero-section .scan-input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

main.hero-section .scan-button {
    width: 100%;
    padding: var(--spacing-16) var(--spacing-24);
    background: linear-gradient(135deg, var(--electric-violet), var(--indigo)) !important;
    border: 1px solid rgba(139, 92, 246, 0.35);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-8);
    transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

main.hero-section .scan-button:hover {
    background: linear-gradient(135deg, #9B6CF6, #7377F1) !important;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(139, 92, 246, 0.4);
}

main.hero-section .scan-button:active {
    transform: translateY(0);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(139, 92, 246, 0.2);
    border-top-color: var(--electric-violet);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ============================================
   Mobile nav (top-nav)
   ============================================ */

@media (max-width: 768px) {
    .top-nav {
        padding: var(--spacing-12) var(--spacing-16);
    }
    .top-nav .nav-container {
        flex-wrap: wrap;
        gap: var(--spacing-16);
    }
    .top-nav .nav-links {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: var(--spacing-8);
    }
    .top-nav .nav-link {
        white-space: nowrap;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .top-nav .nav-links {
        gap: var(--spacing-12);
    }
}