/* ========================================
   Part 2: Preloader, Header, Navigation
======================================== */

/* Preloader */
.preloader {
    position: fixed;
    inset: 0;
    background: var(--navy-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
}

.preloader-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-bottom: var(--space-xl);
}

.preloader-logo-img {
    height: 80px;
    width: auto;
    object-fit: contain;
    animation: preloaderLogoFade 1.5s ease forwards, preloaderPulse 2s ease-in-out infinite 1s;
    opacity: 0;
    transform: scale(0.8);
}

@keyframes preloaderLogoFade {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes preloaderPulse {
    0%, 100% { transform: scale(1); filter: brightness(1); }
    50% { transform: scale(1.05); filter: brightness(1.2); }
}

.logo-letter {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--gold);
    opacity: 0;
    transform: translateY(20px);
    animation: letterFade 0.5s ease forwards;
}

.logo-letter:nth-child(1) { animation-delay: 0.1s; }
.logo-letter:nth-child(2) { animation-delay: 0.2s; }
.logo-letter:nth-child(3) { animation-delay: 0.3s; }
.logo-letter:nth-child(4) { animation-delay: 0.4s; }

@keyframes letterFade {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.preloader-bar {
    width: 200px;
    height: 3px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto var(--space-lg);
}

.preloader-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    width: 0;
    animation: loadProgress 1.5s ease forwards;
}

@keyframes loadProgress {
    to { width: 100%; }
}

.preloader-text {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: rgba(255,255,255,0.5);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-fixed);
    padding: var(--space-lg) 0;
    transition: all var(--transition-base);
    background: linear-gradient(to bottom, rgba(10, 22, 40, 0.95) 0%, rgba(10, 22, 40, 0.8) 60%, transparent 100%);
}

.header.scrolled {
    background: rgba(10, 22, 40, 0.98);
    backdrop-filter: blur(20px);
    padding: var(--space-md) 0;
    box-shadow: 0 4px 30px rgba(0,0,0,0.2);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.nav__logo, .footer__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-mark {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy);
    box-shadow: var(--shadow-gold);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0.1em;
}

.logo-tagline {
    font-size: 0.65rem;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

/* Nav Menu */
.nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav__link {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255,255,255,0.8);
    position: relative;
    padding: var(--space-sm) 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
    color: var(--gold);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

/* Nav Actions */
.nav__actions {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav__phone {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--white);
    font-weight: 500;
}

.nav__phone i {
    color: var(--gold);
}

.nav__phone:hover {
    color: var(--gold);
}

.nav__cta {
    padding: var(--space-sm) var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    animation: pulse-glow 2s ease-in-out infinite;
}

.nav__cta i {
    font-size: 0.85em;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 4px 30px rgba(212, 175, 55, 0.3);
    }
    50% {
        box-shadow: 0 4px 40px rgba(212, 175, 55, 0.6);
    }
}

/* Mobile Toggle */
.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
    z-index: 10;
}

.nav__toggle span {
    width: 24px;
    height: 2px;
    background: var(--gold);
    transition: var(--transition-base);
}

.nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav__close {
    display: none;
}

/* Mobile Menu */
@media (max-width: 1024px) {
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 350px;
        height: 100vh;
        background: var(--navy-dark);
        padding: var(--space-4xl) var(--space-xl);
        transition: right var(--transition-base);
        z-index: 1001;
        box-shadow: -10px 0 30px rgba(0,0,0,0.3);
    }

    .nav__menu.active {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-lg);
    }

    .nav__link {
        font-size: 1.1rem;
    }

    .nav__close {
        display: block;
        position: absolute;
        top: var(--space-xl);
        right: var(--space-xl);
        font-size: 1.5rem;
        color: var(--white);
        cursor: pointer;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__phone {
        display: none;
    }

    .nav__cta {
        display: none;
    }
}

@media (max-width: 768px) {
    .header {
        padding: var(--space-md) 0;
    }

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

    .logo-mark {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .logo-name {
        font-size: 1.1rem;
    }

    .logo-tagline {
        font-size: 0.55rem;
    }

    .nav__menu {
        width: 100%;
        max-width: 100%;
        padding: var(--space-3xl) var(--space-lg);
    }

    .nav__list {
        gap: var(--space-md);
    }

    .nav__link {
        font-size: 1rem;
        padding: var(--space-sm) 0;
    }
}