/* Reset & Base */
:root {
    --bg-color: #ffffff;
    --text-color: #171717;
    --border-color: #e5e5e5;
    --primary-color: #000000;
    --secondary-bg: #f5f5f5;
    --accent-color: #000000;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0a0a0a;
        --text-color: #ededed;
        --border-color: #27272a;
        --primary-color: #ffffff;
        --secondary-bg: #18181b;
        --accent-color: #ffffff;
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Typography & Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

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

.uppercase {
    text-transform: uppercase;
}

.font-bold {
    font-weight: 700;
}

.tracking-tight {
    letter-spacing: -0.025em;
}

/* Layout Components */
header {
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    background: var(--bg-color);
}

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

header nav {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

header nav a:hover,
header nav a.active {
    text-decoration: underline;
    text-underline-offset: 6px;
    text-decoration-thickness: 3px;
}

main {
    flex: 1;
    padding: 2rem 0;
}

footer {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    margin-top: auto;
    font-size: 0.875rem;
    color: #71717a;
    /* zinc-500 equivalent */
}

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

/* Angular/Minimalist Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: var(--bg-color);
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
    transition: opacity 0.2s;
    /* No border radius for angular look */
}

.btn:hover {
    opacity: 0.9;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.card {
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    padding: 1rem;
    transition: border-color 0.2s;
    display: block;
}

.card:hover {
    border-color: var(--accent-color);
}

.card-preview {
    aspect-ratio: 1;
    background-color: var(--secondary-bg);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.card-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.card:hover .card-preview img {
    opacity: 1;
}

.upload-zone {
    border: 2px dashed var(--border-color);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.2s;
    position: relative;
}

.upload-zone:hover {
    background-color: var(--secondary-bg);
}

.upload-zone input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

/* Form Styles */
.form-group {
    margin-bottom: 1rem;
}

.form-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
    font-family: inherit;
    /* Angular look */
}

.form-input:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: -2px;
}

.alert {
    padding: 0.75rem;
    margin-top: 1rem;
    font-size: 0.875rem;
}

.alert-success {
    background-color: #dcfce7;
    color: #166534;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
}

@media (prefers-color-scheme: dark) {
    .alert-success {
        background-color: #14532d;
        color: #dcfce7;
    }

    .alert-error {
        background-color: #7f1d1d;
        color: #fee2e2;
    }
}
/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(5px);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    max-width: 90%;
    max-height: 90%;
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-content img {
    max-width: 100%;
    max-height: 90vh;
    display: block;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-caption {
    color: white;
    text-align: center;
    margin-top: 1rem;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    background: none;
    border: none;
    color: white;
    font-size: 3rem;
    line-height: 1;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s;
    z-index: 1001;
}

.modal-close:hover {
    opacity: 1;
}