/**
 * IFINSTA Guest Premium Design System
 * EXPENSIVE SaaS Aesthetic - Investor Grade
 * 
 * Signal: Premium, established, high-value platform
 * Not: Minimal, template-like, unfinished
 */

/* ==========================================================================
   CSS VARIABLES - EXPENSIVE Palette
   ========================================================================== */
/* Base Design System variables now inherited from variables.css */
:root {
    /* Mapping guest-specific typography if not already in variables.css */
    --ifinsta-guest-font-sans: var(--ifinsta-font-sans);
    --ifinsta-guest-font-mono: var(--ifinsta-font-mono);
}

/* ==========================================================================
   BASE & RESET
   ========================================================================== */
.ifinsta-guest-page {
    font-family: var(--ifinsta-guest-font-sans);
    color: var(--ifinsta-guest-text);
    background: var(--ifinsta-guest-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   HEADER - Premium Fixed
   ========================================================================== */
.ifinsta-guest-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--ifinsta-guest-header-height);
    background: rgba(var(--ifinsta-white-rgb), 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(var(--ifinsta-secondary-rgb), 0.15);
    z-index: var(--ifinsta-z-fixed, 300);
}

.ifinsta-guest-header__container {
    max-width: var(--ifinsta-guest-max-width);
    margin: 0 auto;
    padding: 0 var(--ifinsta-space-8);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ifinsta-guest-header__brand {
    display: flex;
    align-items: center;
}

.ifinsta-guest-header__brand svg,
.ifinsta-guest-header__brand img {
    height: var(--ifinsta-space-8);
    width: auto;
}

/* Navigation */
.ifinsta-guest-header__nav {
    display: flex;
    align-items: center;
    gap: var(--ifinsta-space-2);
}

.ifinsta-guest-header__link {
    padding: var(--ifinsta-space-2) var(--ifinsta-space-4);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--ifinsta-guest-text-secondary);
    border-radius: var(--ifinsta-guest-radius-md);
    transition: all var(--ifinsta-guest-transition-fast);
}

.ifinsta-guest-header__link:hover {
    color: var(--ifinsta-guest-text);
    background: var(--ifinsta-guest-bg-subtle);
}

.ifinsta-guest-header__link--active {
    color: var(--ifinsta-guest-accent);
    font-weight: 600;
}

/* Actions */
.ifinsta-guest-header__actions {
    display: flex;
    align-items: center;
    gap: var(--ifinsta-space-4);
}

.ifinsta-guest-header__login {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--ifinsta-guest-text-secondary);
    padding: 0.5rem 1rem;
    transition: color var(--ifinsta-guest-transition-fast);
}

.ifinsta-guest-header__login:hover {
    color: var(--ifinsta-guest-text);
}

.ifinsta-guest-header__cta {
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    background: var(--ifinsta-primary-600);
    padding: var(--ifinsta-space-2) var(--ifinsta-space-5);
    border-radius: var(--ifinsta-guest-radius-md);
    transition: all var(--ifinsta-guest-transition-fast);
    box-shadow: 0 1px 2px rgba(37, 99, 235, 0.1);
}

.ifinsta-guest-header__cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

/* Mobile Toggle */
.ifinsta-guest-header__menu-toggle {
    display: none;
    padding: var(--ifinsta-space-2);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--ifinsta-guest-text);
}

/* ==========================================================================
   MOBILE MENU
   ========================================================================== */
.ifinsta-guest-mobile-menu {
    position: fixed;
    inset: 0;
    z-index: var(--ifinsta-z-sidebar, 400);
    visibility: hidden;
    opacity: 0;
    transition: all var(--ifinsta-guest-transition-base);
}

.ifinsta-guest-mobile-menu[data-open="true"] {
    visibility: visible;
    opacity: 1;
}

.ifinsta-guest-mobile-menu__overlay {
    position: absolute;
    inset: 0;
    background: rgba(var(--ifinsta-secondary-900-rgb), 0.4);
    backdrop-filter: blur(4px);
}

.ifinsta-guest-mobile-menu__panel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: var(--ifinsta-space-95);
    background: var(--ifinsta-guest-bg);
    box-shadow: var(--ifinsta-guest-shadow-xl);
    transform: translateX(100%);
    transition: transform var(--ifinsta-guest-transition-base);
    display: flex;
    flex-direction: column;
}

.ifinsta-guest-mobile-menu[data-open="true"] .ifinsta-guest-mobile-menu__panel {
    transform: translateX(0);
}

.ifinsta-guest-mobile-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--ifinsta-space-6);
    border-bottom: 1px solid var(--ifinsta-guest-border);
}

.ifinsta-guest-mobile-menu__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ifinsta-guest-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.ifinsta-guest-mobile-menu__close {
    padding: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--ifinsta-guest-text-secondary);
}

.ifinsta-guest-mobile-menu__nav {
    flex: 1;
    padding: var(--ifinsta-space-4) 0;
}

.ifinsta-guest-mobile-menu__link {
    display: block;
    padding: var(--ifinsta-space-4) var(--ifinsta-space-6);
    font-size: var(--ifinsta-text-lg);
    font-weight: 500;
    color: var(--ifinsta-guest-text);
    border-left: var(--ifinsta-space-0-5) solid transparent;
    transition: all var(--ifinsta-guest-transition-fast);
}

.ifinsta-guest-mobile-menu__link:hover {
    background: var(--ifinsta-guest-bg-subtle);
}

.ifinsta-guest-mobile-menu__link--active {
    color: var(--ifinsta-guest-accent);
    background: rgba(59, 130, 246, 0.05);
    border-left-color: var(--ifinsta-guest-accent);
}

.ifinsta-guest-mobile-menu__footer {
    padding: var(--ifinsta-space-6);
    border-top: 1px solid var(--ifinsta-guest-border);
    display: flex;
    flex-direction: column;
    gap: var(--ifinsta-space-3);
}

/* ==========================================================================
   FOOTER - Premium
   ========================================================================== */
.ifinsta-guest-footer {
    background: var(--ifinsta-guest-bg-dark);
    color: var(--ifinsta-guest-text-on-dark);
    padding: var(--ifinsta-space-4) 0 var(--ifinsta-space-8);
}

.ifinsta-guest-footer__container {
    max-width: var(--ifinsta-guest-max-width);
    margin: 0 auto;
    padding: 0 var(--ifinsta-space-8);
}

.ifinsta-guest-footer__grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: var(--ifinsta-space-16);
    margin-bottom: var(--ifinsta-space-16);
}

.ifinsta-guest-footer__brand {
    max-width: var(--ifinsta-space-70);
}

.ifinsta-guest-footer__logo {
    height: var(--ifinsta-space-7);
    width: auto;
    margin-bottom: var(--ifinsta-space-5);
}

.ifinsta-guest-footer__tagline {
    font-size: 0.9375rem;
    color: rgba(241, 245, 249, 0.7);
    line-height: 1.6;
    margin-bottom: var(--ifinsta-space-6);
}

.ifinsta-guest-footer__social {
    display: flex;
    gap: var(--ifinsta-space-3);
}

.ifinsta-guest-footer__social-link {
    width: var(--ifinsta-space-10);
    height: var(--ifinsta-space-10);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--ifinsta-guest-radius-md);
    color: rgba(241, 245, 249, 0.7);
    transition: all var(--ifinsta-guest-transition-fast);
}

.ifinsta-guest-footer__social-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateY(-2px);
}

.ifinsta-guest-footer__column {
    padding-top: var(--ifinsta-space-2);
}

.ifinsta-guest-footer__heading {
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(241, 245, 249, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--ifinsta-space-5);
}

.ifinsta-guest-footer__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--ifinsta-space-3);
}

.ifinsta-guest-footer__list a {
    font-size: 0.9375rem;
    color: rgba(241, 245, 249, 0.7);
    transition: color var(--ifinsta-guest-transition-fast);
}

.ifinsta-guest-footer__list a:hover {
    color: white;
}

.ifinsta-guest-footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--ifinsta-space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.ifinsta-guest-footer__copyright {
    font-size: 0.875rem;
    color: rgba(241, 245, 249, 0.5);
}

.ifinsta-guest-footer__status {
    display: flex;
    align-items: center;
    gap: var(--ifinsta-space-2);
    font-size: 0.875rem;
    color: rgba(241, 245, 249, 0.5);
}

.ifinsta-guest-footer__status-indicator {
    width: var(--ifinsta-space-2);
    height: var(--ifinsta-space-2);
    background: var(--ifinsta-success);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--ifinsta-success);
}

/* ==========================================================================
   MAIN CONTENT
   ========================================================================== */
.ifinsta-guest-main {
    padding-top: var(--ifinsta-guest-header-height);
}

.ifinsta-guest-container {
    max-width: var(--ifinsta-guest-max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================================================
   BUTTONS - Premium
   ========================================================================== */
.ifinsta-guest-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--ifinsta-space-2);
    font-size: 0.9375rem;
    font-weight: 600;
    padding: var(--ifinsta-space-3) var(--ifinsta-space-6);
    border-radius: var(--ifinsta-guest-radius-md);
    transition: all var(--ifinsta-guest-transition-fast);
    cursor: pointer;
    border: none;
}

.ifinsta-guest-btn--primary {
    color: white;
    background: var(--ifinsta-primary-600);
    box-shadow: 0 1px 2px rgba(37, 99, 235, 0.1), 0 0 0 1px rgba(37, 99, 235, 0.1) inset;
}

.ifinsta-guest-btn--primary:hover {
    transform: translateY(-2px);
    color: white;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3), 0 0 0 1px rgba(37, 99, 235, 0.1) inset;
}

.ifinsta-guest-btn--secondary {
    color: var(--ifinsta-guest-text);
    background: white;
    border: 1px solid var(--ifinsta-guest-border-strong);
    box-shadow: var(--ifinsta-guest-shadow-sm);
}

.ifinsta-guest-btn--secondary:hover {
    border-color: var(--ifinsta-guest-border);
    box-shadow: var(--ifinsta-guest-shadow-md);
    transform: translateY(-1px);
}

.ifinsta-guest-btn--lg {
    padding: var(--ifinsta-space-4) var(--ifinsta-space-8);
    font-size: 1rem;
}

/* ==========================================================================
   CARDS - Premium
   ========================================================================== */
.ifinsta-guest-card {
    background: var(--ifinsta-bg-elevated);
    border: 1px solid var(--ifinsta-guest-border);
    border-radius: var(--ifinsta-guest-radius-lg);
    padding: var(--ifinsta-space-8);
    box-shadow: var(--ifinsta-guest-shadow-sm);
    transition: all var(--ifinsta-guest-transition-fast);
}

.ifinsta-guest-card:hover {
    box-shadow: var(--ifinsta-guest-shadow-md);
    transform: translateY(-2px);
}

/* ==========================================================================
   SECTIONS
   ========================================================================== */
.ifinsta-guest-section {
    padding: var(--ifinsta-space-16) 0;
}

.ifinsta-guest-section__title {
    font-size: var(--ifinsta-text-4xl);
    font-weight: 700;
    color: var(--ifinsta-guest-text);
    margin-bottom: var(--ifinsta-space-4);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.ifinsta-guest-section__lead {
    font-size: 1.125rem;
    color: var(--ifinsta-guest-text-secondary);
    max-width: var(--ifinsta-space-150);
    line-height: 1.7;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
    .ifinsta-guest-header__nav {
        display: none;
    }

    .ifinsta-guest-header__menu-toggle {
        display: flex;
    }

    .ifinsta-guest-footer__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--ifinsta-space-12);
    }

    .ifinsta-guest-footer__brand {
        grid-column: 1 / -1;
        max-width: 100%;
    }
}

@media (max-width: 640px) {
    :root {
        --ifinsta-guest-content-padding: 1.25rem;
    }

    .ifinsta-guest-header__actions {
        display: none;
    }

    .ifinsta-guest-header__container,
    .ifinsta-guest-footer__container,
    .ifinsta-guest-container {
        padding: 0 var(--ifinsta-space-5);
    }

    .ifinsta-guest-footer__grid {
        grid-template-columns: 1fr;
        gap: var(--ifinsta-space-8);
    }

    .ifinsta-guest-footer__bottom {
        flex-direction: column;
        gap: var(--ifinsta-space-4);
        text-align: center;
    }

    .ifinsta-guest-section {
        padding: var(--ifinsta-space-12) 0;
    }

    .ifinsta-guest-section__title {
        font-size: var(--ifinsta-text-2xl);
    }
}