/* ====================================
   GERZE YALI OTEL — Premium Design System
   ==================================== */

:root {
    --navy-900: #0a1628;
    --navy-800: #0f2140;
    --navy-700: #142d58;
    --navy-600: #1a3a6f;
    --blue-500: #1a6fb5;
    --blue-400: #2d8fd4;
    --blue-300: #4aa3e0;
    --sky-200: #87c4eb;
    --sky-100: #c5e3f6;
    --sky-50: #e8f4fd;
    --white: #ffffff;
    --off-white: #f8fbfe;
    --gold-500: #c9a84c;
    --gold-400: #d4b96a;
    --gold-300: #e0ca88;
    --gray-900: #1a1a2e;
    --gray-700: #374151;
    --gray-500: #6b7280;
    --gray-300: #d1d5db;
    --gray-100: #f3f4f6;
    --red-500: #ef4444;
    --green-500: #22c55e;
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --space-xs: 0.25rem; --space-sm: 0.5rem; --space-md: 1rem; --space-lg: 1.5rem;
    --space-xl: 2rem; --space-2xl: 3rem; --space-3xl: 4rem; --space-4xl: 6rem;
    --container-max: 1200px; --container-narrow: 900px; --header-height: 80px;
    --radius-sm: 6px; --radius-md: 12px; --radius-lg: 20px; --radius-xl: 30px; --radius-full: 50%;
    --shadow-sm: 0 2px 8px rgba(10,22,40,0.06);
    --shadow-md: 0 4px 20px rgba(10,22,40,0.1);
    --shadow-lg: 0 8px 40px rgba(10,22,40,0.15);
    --shadow-xl: 0 16px 60px rgba(10,22,40,0.2);
    --ease-out: cubic-bezier(0.16,1,0.3,1);
    --transition-fast: 0.2s var(--ease-out);
    --transition-normal: 0.4s var(--ease-out);
    --transition-slow: 0.6s var(--ease-out);
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-body);color:var(--gray-700);background:var(--off-white);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color var(--transition-fast)}
ul,ol{list-style:none}
.container{max-width:var(--container-max);margin:0 auto;padding:0 var(--space-xl)}
h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:var(--navy-800);line-height:1.3;font-weight:600}
h1{font-size:clamp(2rem,5vw,3.5rem)}h2{font-size:clamp(1.5rem,3.5vw,2.5rem)}
h3{font-size:clamp(1.2rem,2.5vw,1.75rem)}h4{font-size:1.25rem}
p{margin-bottom:var(--space-md)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:var(--space-sm);padding:14px 32px;border-radius:var(--radius-xl);font-family:var(--font-body);font-weight:600;font-size:0.95rem;border:none;cursor:pointer;transition:all var(--transition-normal);position:relative;overflow:hidden}
.btn::after{content:'';position:absolute;top:50%;left:50%;width:0;height:0;background:rgba(255,255,255,0.15);border-radius:var(--radius-full);transform:translate(-50%,-50%);transition:width 0.5s,height 0.5s}
.btn:hover::after{width:300px;height:300px}
.btn-primary{background:linear-gradient(135deg,var(--blue-500),var(--blue-300));color:var(--white);box-shadow:0 4px 20px rgba(26,111,181,0.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(26,111,181,0.45)}
.btn-secondary{background:transparent;color:var(--white);border:2px solid rgba(255,255,255,0.5)}
.btn-secondary:hover{background:rgba(255,255,255,0.1);border-color:var(--white);transform:translateY(-2px)}
.btn-gold{background:linear-gradient(135deg,var(--gold-500),var(--gold-300));color:var(--navy-900);box-shadow:0 4px 20px rgba(201,168,76,0.35)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(201,168,76,0.45)}
.btn-outline{background:transparent;color:var(--blue-500);border:2px solid var(--blue-500)}
.btn-outline:hover{background:var(--blue-500);color:var(--white);transform:translateY(-2px)}
.btn-sm{padding:10px 22px;font-size:0.85rem}
.btn-lg{padding:18px 40px;font-size:1.05rem}

/* Sections */
.section{padding:var(--space-4xl) 0}
.section-header{text-align:center;margin-bottom:var(--space-3xl)}
.section-header h2{margin-bottom:var(--space-md);position:relative;display:inline-block}
.section-header h2::after{content:'';position:absolute;bottom:-12px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,var(--blue-500),var(--gold-500));border-radius:2px}
.section-header p{color:var(--gray-500);font-size:1.05rem;max-width:600px;margin:var(--space-lg) auto 0}
.section-alt{background:var(--white)}
.section-dark{background:linear-gradient(135deg,var(--navy-900),var(--navy-700));color:var(--white)}
.section-dark h2,.section-dark h3{color:var(--white)}.section-dark p{color:var(--sky-200)}

/* WhatsApp Float */
.whatsapp-float{position:fixed;bottom:30px;right:30px;width:60px;height:60px;background:#25d366;color:var(--white);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:1.8rem;box-shadow:0 4px 20px rgba(37,211,102,0.4);z-index:1000;transition:all var(--transition-normal);animation:pulse-wp 2s infinite}
.whatsapp-float:hover{transform:scale(1.1) translateY(-3px)}
@keyframes pulse-wp{0%,100%{box-shadow:0 4px 20px rgba(37,211,102,0.4)}50%{box-shadow:0 4px 30px rgba(37,211,102,0.6)}}

/* Header */
.main-header{position:fixed;top:0;left:0;right:0;height:var(--header-height);z-index:999;transition:all var(--transition-normal);background:transparent}
.main-header.scrolled{background:rgba(10,22,40,0.95);backdrop-filter:blur(20px);box-shadow:0 4px 30px rgba(0,0,0,0.15);height:70px}
.main-header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo,.footer-logo{display:flex;align-items:center;gap:var(--space-sm)}
.logo-icon{width:44px;height:44px;background:linear-gradient(135deg,var(--blue-500),var(--gold-500));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:var(--white);font-size:1.2rem;flex-shrink:0}
.logo-text{display:flex;flex-direction:column}
.logo-name{font-family:var(--font-heading);font-weight:700;font-size:1.2rem;color:var(--white);line-height:1.2}
.logo-sub{font-size:0.7rem;color:var(--sky-200);text-transform:uppercase;letter-spacing:2px;font-weight:400}
.nav-list{display:flex;gap:var(--space-xs)}
.nav-link{padding:8px 18px;color:rgba(255,255,255,0.85);font-weight:500;font-size:0.9rem;border-radius:var(--radius-xl);transition:all var(--transition-fast);position:relative}
.nav-link:hover,.nav-link.active{color:var(--white);background:rgba(255,255,255,0.1)}
.nav-link.active::after{content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%);width:20px;height:2px;background:var(--gold-500);border-radius:1px}
.header-actions{display:flex;align-items:center;gap:var(--space-md)}
.header-phone{display:flex;align-items:center;gap:8px;color:var(--white);font-weight:500;font-size:0.85rem;padding:8px 18px;border:1px solid rgba(255,255,255,0.2);border-radius:var(--radius-xl);transition:all var(--transition-fast)}
.header-phone:hover{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.4)}
.header-phone i{color:var(--gold-500)}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;z-index:1001}
.hamburger span{display:block;width:26px;height:2px;background:var(--white);transition:all var(--transition-fast);border-radius:2px}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(10,22,40,0.7);backdrop-filter:blur(4px);z-index:997;opacity:0;transition:opacity var(--transition-normal)}
.mobile-menu-overlay.active{display:block;opacity:1}