:root {
    --primary-color: #3b82f6;
    --primary-glow: rgba(59, 130, 246, 0.5);
    --secondary-color: #1d4ed8;
    --bg-color: #020617;
    --text-color: #f1f5f9;
    --text-dim: #94a3b8;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --accent-color: #38bdf8;
    --error-color: #f43f5e;
    --success-color: #10b981;
    --glass-bg: rgba(15, 23, 42, 0.6);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(30, 58, 138, 0.3) 0, transparent 50%),
        radial-gradient(at 100% 100%, rgba(15, 23, 42, 0.3) 0, transparent 50%);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Shared Navbar */
.navbar {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 1.25rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--card-border);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    background: linear-gradient(to right, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.2s;
}

.nav-links a:hover {
    color: #fff;
}

.btn-sm {
    padding: 0.6rem 1.25rem;
    font-size: 0.85rem;
    margin-top: 0;
    width: auto;
    border-radius: 0.75rem;
}

h1 {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    letter-spacing: -0.05em;
    background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 2.5rem;
    border-radius: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 550px;
    border: 1px solid var(--card-border);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 1rem;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
    margin-top: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

button:hover:not(:disabled) {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 0 20px var(--primary-glow);
}

button:active:not(:disabled) {
    transform: translateY(0);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(1);
}

.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Custom Toast Notifications */
#toast-container {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    pointer-events: none;
}

.toast {
    min-width: 300px;
    padding: 1rem 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    color: white;
    font-weight: 600;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transform: translateX(120%);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: auto;
}

.toast.show {
    transform: translateX(0);
}

.toast-success { border-left: 4px solid var(--success-color); }
.toast-error { border-left: 4px solid var(--error-color); }
.toast-info { border-left: 4px solid var(--accent-color); }

.toast-icon { font-size: 1.25rem; }

@media (max-width: 480px) {
    #toast-container {
        top: auto;
        bottom: 2rem;
        left: 1rem;
        right: 1rem;
    }
    .toast {
        min-width: 0;
        width: 100%;
    }
}

/* Dialog Modals */
.dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.dialog-overlay.show {
    display: flex;
    opacity: 1;
}

.dialog-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1.5rem;
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.dialog-overlay.show .dialog-card {
    transform: translateY(0);
}

.dialog-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 800;
}

.dialog-card p {
    color: var(--text-dim);
    margin-bottom: 2rem;
    line-height: 1.5;
}

.dialog-buttons {
    display: flex;
    gap: 1rem;
}

.dialog-buttons button {
    margin-top: 0;
    padding: 0.8rem 1.5rem;
    border-radius: 0.8rem;
}

.btn-cancel {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    border: 1px solid var(--card-border);
}

.btn-cancel:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-confirm {
    background: var(--primary-color);
    color: #fff;
}

.btn-confirm.danger {
    background: var(--error-color);
}


/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000; /* Increased to be above everything */
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal:not(.show) .download-fab {
    display: none !important;
}

.modal.show {
    display: flex;
    opacity: 1;
}

.modal-content-container {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 0.5rem;
    box-shadow: 0 0 30px rgba(0,0,0,0.5);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1010;
}

.download-fab {
    position: absolute;
    bottom: 24px;
    right: 24px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.2s ease;
    z-index: 1010;
}

.download-fab:hover {
    background: rgba(255, 255, 255, 0.9);
    color: #000;
    transform: scale(1.05);
}

.download-fab svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

@media (max-width: 600px) {
    .download-fab {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
}