/* ==========================================================================
   TITAN FIT - LUXURY GYM DESIGN SYSTEM & CORE STYLES
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;700;800;900&display=swap');

:root {
    /* Color Palette - Dark Luxury Theme */
    --primary: #FF3B00;
    --primary-hover: #E03300;
    --primary-glow: rgba(255, 59, 0, 0.35);
    --secondary: #00E5FF;
    --secondary-glow: rgba(0, 229, 255, 0.35);
    --accent-gold: #FFB800;

    --bg-main: #0B0C10;
    --bg-card: rgba(21, 23, 30, 0.85);
    --bg-card-hover: rgba(30, 33, 44, 0.95);
    --bg-surface: #14161D;
    --bg-nav: rgba(11, 12, 16, 0.85);
    
    --text-primary: #F0F2F8;
    --text-secondary: #9DA4B4;
    --text-muted: #646D7E;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(255, 59, 0, 0.4);

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
    --shadow-glow: 0 0 25px var(--primary-glow);
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-main: #F4F6F9;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F0F3F8;
    --bg-surface: #E8ECEF;
    --bg-nav: rgba(244, 246, 249, 0.9);
    
    --text-primary: #12141D;
    --text-secondary: #4A5264;
    --text-muted: #7E879B;
    
    --border-color: rgba(0, 0, 0, 0.08);
    --border-highlight: rgba(255, 59, 0, 0.5);
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.text-gradient {
    background: linear-gradient(135deg, #FFFFFF 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-orange {
    color: var(--primary);
}

.text-cyan {
    color: var(--secondary);
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 59, 0, 0.12);
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    margin-bottom: 16px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 650px;
    margin: 0 auto 40px auto;
}

/* Container */
.container {
    width: 90%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 15px;
}

.section-padding {
    padding: 100px 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-weight: 700;
    font-size: 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: #FFFFFF;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 59, 0, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(255, 59, 0, 0.05);
}

.btn-cyan {
    background: var(--secondary);
    color: #000;
    box-shadow: 0 4px 20px var(--secondary-glow);
}

.btn-cyan:hover {
    background: #00C8E0;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.88rem;
}

/* Hero Section Contrast Guarantee (Light & Dark Themes) */
.hero-section {
    color: #FFFFFF !important;
}

.hero-section h1 {
    color: #FFFFFF !important;
    text-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
}

.hero-section p {
    color: rgba(255, 255, 255, 0.88) !important;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.7);
}

.hero-section .text-gradient {
    background: linear-gradient(135deg, #FFFFFF 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-section .section-tag {
    background: rgba(255, 59, 0, 0.22) !important;
    color: #FF5522 !important;
    border-color: rgba(255, 59, 0, 0.5) !important;
    backdrop-filter: blur(8px);
}

.hero-section .btn-secondary,
[data-theme="light"] .hero-section .btn-secondary,
.hero-section a.btn-secondary {
    color: #FFFFFF !important;
    border: 2px solid #FFFFFF !important;
    background: rgba(255, 255, 255, 0.18) !important;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6), inset 0 0 15px rgba(255, 255, 255, 0.1) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    font-weight: 800 !important;
    letter-spacing: 0.04em;
    padding: 14px 28px !important;
}

.hero-section .btn-secondary i,
[data-theme="light"] .hero-section .btn-secondary i {
    color: var(--secondary) !important;
    font-size: 1.15rem;
}

.hero-section .btn-secondary:hover,
[data-theme="light"] .hero-section .btn-secondary:hover {
    background: var(--secondary) !important;
    border-color: var(--secondary) !important;
    color: #000000 !important;
    box-shadow: 0 8px 30px rgba(0, 229, 255, 0.5) !important;
    transform: translateY(-2px);
}

.hero-section .btn-secondary:hover i,
[data-theme="light"] .hero-section .btn-secondary:hover i {
    color: #000000 !important;
}

/* Header & Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-nav);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.navbar .nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo {
    display: inline-flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    gap: 8px !important;
    font-family: var(--font-heading);
    font-size: 1.25rem !important;
    font-weight: 900;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    white-space: nowrap !important;
    text-decoration: none;
    flex-shrink: 0 !important;
    line-height: 1 !important;
}

.logo *, .logo-text, .logo-text * {
    white-space: nowrap !important;
    display: inline-block !important;
    flex-wrap: nowrap !important;
    line-height: 1 !important;
}

.logo-icon {
    width: 32px !important;
    height: 32px !important;
    background: var(--primary);
    clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%);
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    color: #fff !important;
    font-weight: 900 !important;
    font-size: 1rem !important;
    flex-shrink: 0 !important;
}

.nav-links {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    gap: 16px !important;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text-secondary);
    position: relative;
    padding: 6px 0;
    white-space: nowrap !important;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

.nav-actions {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    gap: 10px !important;
    flex-shrink: 0 !important;
}

#nav-auth-actions {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    gap: 8px !important;
    white-space: nowrap !important;
}

#nav-auth-actions .btn {
    display: inline-flex !important;
    white-space: nowrap !important;
    padding: 7px 14px !important;
    font-size: 0.82rem !important;
}

.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.theme-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.6rem;
    cursor: pointer;
    padding: 4px;
    align-items: center;
    justify-content: center;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px;
    transition: var(--transition);
}

.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-highlight);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 22px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    min-width: 280px;
    max-width: 400px;
    animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast-success { border-left: 4px solid #00E676; }
.toast-error { border-left: 4px solid #FF1744; }
.toast-info { border-left: 4px solid var(--secondary); }

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

/* Floating WhatsApp Button */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    left: 24px;
    width: 54px;
    height: 54px;
    background-color: #25D366;
    color: #FFF;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
    z-index: 900;
    transition: var(--transition);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.6);
}

/* Footer */
footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 80px 0 30px 0;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin: 16px 0 24px 0;
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-icon {
    width: 38px;
    height: 38px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.footer-column h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-column ul li {
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.footer-column ul li a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-column ul li a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive Media Queries */
@media (max-width: 1100px) {
    .navbar .nav-container {
        height: 70px;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 290px;
        height: calc(100vh - 70px);
        background: var(--bg-surface);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 30px 24px;
        gap: 16px;
        border-left: 1px solid var(--border-color);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
        transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
        z-index: 999;
    }
    
    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links .nav-link {
        display: block;
        font-size: 1rem;
        padding: 10px 0;
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .mobile-menu-btn {
        display: flex;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 600px) {
    .logo {
        font-size: 1.15rem;
        gap: 8px;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }

    .btn-sm {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .section-padding {
        padding: 60px 0;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}