/* ========================================
   Responsive Styles & Media Queries
   ======================================== */

/* ===== Large Tablets & Small Desktops (max-width: 1024px) ===== */
@media (max-width: 1024px) {
    /* Sidebar & Navigation */
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        z-index: var(--z-sticky);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    /* Main Content */
    .main-content {
        margin-left: 0;
        padding: var(--spacing-xl);
    }

    /* Mobile Header */
    .mobile-header {
        display: flex;
    }

    /* Hero Content */
    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-text {
        max-width: 100%;
    }

    .tagline {
        margin: var(--spacing-4xl) auto 0;
    }

    /* Decorative Elements */
    .decorative-plus {
        display: none;
    }

    /* Grids */
    .projects-grid {
        grid-template-columns: 1fr;
    }

    /* Projects Header */
    .projects-header {
        flex-direction: column;
        gap: var(--spacing-3xl);
    }
}

/* ===== Tablets (max-width: 768px) ===== */
@media (max-width: 768px) {
    /* Navigation */
    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    /* Header */
    nav {
        padding: 0 var(--spacing-xl);
    }

    /* Hero & Cards */
    .hero,
    .clients {
        padding: var(--spacing-4xl) var(--spacing-3xl);
        margin: 10px;
    }

    /* Typography */
    .header-title {
        font-size: var(--font-size-5xl);
    }

    .session-time {
        font-size: var(--font-size-7xl);
    }

    /* Tracking Card */
    .tracking-card {
        padding: var(--spacing-3xl) var(--spacing-xl);
    }

    .tracking-controls {
        flex-wrap: wrap;
    }

    .btn {
        flex: 1;
        min-width: 120px;
    }

    /* Chart */
    .chart {
        height: 200px;
    }

    /* Projects */
    .projects {
        padding: 0 var(--spacing-3xl);
        margin: var(--spacing-4xl) 10px;
    }

    /* Footer */
    .footer-text {
        bottom: var(--spacing-xl);
        right: var(--spacing-3xl);
    }

    .hero .footer-text {
        bottom: var(--spacing-xl);
        right: var(--spacing-3xl);
    }

    /* Settings Modal */
    .settings-content {
        padding: var(--spacing-3xl) var(--spacing-xl);
    }

    /* Login Container */
    .login-container {
        padding: var(--spacing-4xl) var(--spacing-3xl);
    }

    .login-container .logo {
        font-size: var(--font-size-7xl);
    }

    .login-container .registered {
        font-size: var(--font-size-4xl);
    }

    .subtitle {
        font-size: var(--font-size-2xl);
    }

    .decorative-plus {
        font-size: var(--font-size-2xl);
    }

    .login-container .plus-1 { top: 20px; left: 20px; }
    .login-container .plus-2 { top: 20px; right: 20px; }
    .login-container .plus-3 { bottom: 20px; left: 20px; }
    .login-container .plus-4 { bottom: 20px; right: 20px; }
}

/* ===== Mobile Devices (max-width: 480px) ===== */
@media (max-width: 480px) {
    /* Body */
    body {
        padding: 10px;
    }

    /* Login Container */
    .login-container {
        padding: var(--spacing-3xl) var(--spacing-xl);
    }

    /* Buttons */
    .btn {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-md);
    }

    /* Typography */
    .header-title {
        font-size: var(--font-size-4xl);
    }

    .session-time {
        font-size: var(--font-size-6xl);
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    /* Hero */
    .hero {
        padding: var(--spacing-3xl) var(--spacing-xl);
        min-height: auto;
    }

    /* Settings */
    .settings-content {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }

    .settings-title {
        font-size: var(--font-size-4xl);
    }

    /* Form Elements */
    .form-input {
        padding: 10px var(--spacing-md);
        font-size: var(--font-size-md);
    }

    /* Projects */
    .projects {
        padding: 0 var(--spacing-xl);
        margin: var(--spacing-3xl) 10px;
    }

    /* Charts */
    .chart {
        gap: var(--spacing-sm);
    }

    /* Cards */
    .project-card,
    .feature-card {
        padding: var(--spacing-xl);
    }
}

/* ===== Print Styles ===== */
@media print {
    .sidebar,
    .nav-links,
    .hamburger,
    .mobile-header,
    .tracking-controls,
    .settings-modal,
    .decorative-plus {
        display: none !important;
    }

    .main-content {
        margin-left: 0;
    }

    body {
        background: white;
    }

    .tracking-card,
    .hero {
        background: white;
        color: black;
        border: 1px solid #000;
    }
}

/* ===== Dark Mode Support (Future Enhancement) ===== */
@media (prefers-color-scheme: dark) {
    /* Add dark mode styles here if needed */
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== High Contrast Mode ===== */
@media (prefers-contrast: more) {
    .btn,
    .form-input {
        border: 2px solid currentColor;
    }
}