/* ========================================
   CSS Variables & Reset
======================================== */
:root {
    /* Primary Color Palette */
    --color-primary: #0066cc;
    --color-primary-light: #3d8fdb;
    --color-primary-lighter: #e6f2ff;
    --color-primary-dark: #004d99;
    --color-primary-darker: #003366;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    /* Semantic Colors */
    --color-info: #0ea5e9;
    --color-info-light: #e0f2fe;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-gray-50);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

img {
    max-width: 100%;
    height: auto;
}

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

address {
    font-style: normal;
}

/* ========================================
   Layout
======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.main {
    flex: 1;
    padding: var(--spacing-8) 0 var(--spacing-16);
}

/* ========================================
   Header
======================================== */
.header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-10) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.header__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-2);
    position: relative;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header__subtitle {
    font-size: var(--font-size-lg);
    font-weight: 400;
    opacity: 0.9;
    position: relative;
}

/* ========================================
   Notice Section
======================================== */
.notice {
    background: linear-gradient(135deg, var(--color-info-light) 0%, var(--color-white) 100%);
    border: 1px solid var(--color-info);
    border-left: 4px solid var(--color-info);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    margin-bottom: var(--spacing-10);
    display: flex;
    gap: var(--spacing-4);
    align-items: flex-start;
    box-shadow: var(--shadow-md);
}

.notice__icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--color-info);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-xl);
}

.notice__content {
    flex: 1;
}

.notice__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-2);
}

.notice__text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ========================================
   Services Section
======================================== */
.services__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-gray-800);
    text-align: center;
    margin-bottom: var(--spacing-8);
    position: relative;
}

.services__title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    margin: var(--spacing-3) auto 0;
    border-radius: var(--radius-full);
}

.services__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

/* ========================================
   Cards
======================================== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 1px solid var(--color-gray-100);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.card__icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary-lighter) 0%, var(--color-white) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-5);
    color: var(--color-primary);
    font-size: var(--font-size-3xl);
    border: 2px solid var(--color-primary-lighter);
    transition: all var(--transition-base);
}

.card:hover .card__icon {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
}

.card__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-2);
}

.card__description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-4);
    line-height: 1.5;
}

.card__professional {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
}

.card__professional i {
    color: var(--color-primary);
}

.card__button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    font-size: var(--font-size-base);
    font-weight: 600;
    padding: var(--spacing-4) var(--spacing-8);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    box-shadow: 0 4px 14px rgba(0, 102, 204, 0.3);
}

.card__button:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-darker) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
}

.card__button:active {
    transform: translateY(0);
}

.card__files {
    margin-top: var(--spacing-4);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
}

.card__file-link {
    color: var(--color-primary);
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.card__file-link:hover {
    color: var(--color-primary-dark);
}

/* ========================================
   Modal
======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal[aria-hidden="false"] {
    opacity: 1;
    visibility: visible;
}

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal__content {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    max-width: 420px;
    width: 100%;
    text-align: center;
    box-shadow: var(--shadow-xl);
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
}

.modal[aria-hidden="false"] .modal__content {
    transform: scale(1) translateY(0);
}

.modal__icon {
    width: 64px;
    height: 64px;
    background: var(--color-primary-lighter);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-5);
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
}

.modal__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-3);
}

.modal__text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-6);
    line-height: 1.6;
}

.modal__actions {
    display: flex;
    gap: var(--spacing-3);
    justify-content: center;
}

.modal__button {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-5);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.modal__button--cancel {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

.modal__button--cancel:hover {
    background: var(--color-gray-200);
}

.modal__button--confirm {
    background: var(--color-primary);
    color: var(--color-white);
}

.modal__button--confirm:hover {
    background: var(--color-primary-dark);
}

/* ========================================
   Footer
======================================== */
.footer {
    background: var(--color-gray-800);
    color: var(--color-gray-300);
    padding: var(--spacing-8) 0;
    text-align: center;
}

.footer__address {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-sm);
}

.footer__address i {
    color: var(--color-primary-light);
}

.footer__copyright {
    font-size: var(--font-size-xs);
    color: var(--color-gray-400);
}

/* ========================================
   Responsive Design
======================================== */

/* Tablet */
@media (min-width: 640px) {
    .header {
        padding: var(--spacing-12) 0;
    }

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

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

    .notice {
        padding: var(--spacing-8);
    }

    .notice__text {
        font-size: var(--font-size-base);
    }

    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .header {
        padding: var(--spacing-16) 0;
    }

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

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

    .services__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-8);
    }

    .card {
        padding: var(--spacing-10);
    }

    .card__icon {
        width: 100px;
        height: 100px;
        font-size: var(--font-size-4xl);
    }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}