/*
Theme Name: OIDR
Theme URI: https://oidr.de
Author: OIDR Team
Author URI: https://oidr.de
Description: A modern startup landing page theme for OIDR - student-run research organization. Features a clean, minimalist design with soft gradients, rounded cards, and responsive layout.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: oidr
Tags: responsive, custom-header, custom-menu, featured-images, translation-ready

This theme, like WordPress, is licensed under the GPL.
Use it to make something cool, have fun, and share what you've learned.
*/

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #0b3041;
    --color-primary-light: #1a4a6e;
    --color-secondary: #8d0f22;
    --color-secondary-hover: #a51229;
    --color-white: #FFFFFF;
    --color-bg-light: #F8FAFC;
    --color-text-dark: #1E293B;
    --color-text-light: #64748B;
    --color-border: #E2E8F0;
    --color-accent: #e8f4f8;

    /* Typography */
    --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-h1: 56px;
    --font-size-h2: 40px;
    --font-size-h3: 24px;
    --font-size-body: 16px;
    --line-height-body: 1.6;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;

    /* Effects */
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

/* Reset & Base */
*,
*::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-body);
    line-height: var(--line-height-body);
    color: var(--color-text-dark);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-primary);
}

h1 {
    font-size: var(--font-size-h1);
    font-weight: 700;
}

h2 {
    font-size: var(--font-size-h2);
}

h3 {
    font-size: var(--font-size-h3);
}

p {
    margin-bottom: 1em;
}

p:last-child {
    margin-bottom: 0;
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-secondary-hover);
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Section Base */
.section {
    padding: var(--spacing-xl) 0;
}

.section--light {
    background-color: var(--color-bg-light);
}

.section--dark {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.section--dark h2,
.section--dark h3 {
    color: var(--color-white);
}

.section__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

.section__title {
    margin-bottom: var(--spacing-sm);
}

.section__subtitle {
    color: var(--color-text-light);
    font-size: 18px;
}

.section--dark .section__subtitle {
    color: rgba(255, 255, 255, 0.8);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s ease;
    text-decoration: none;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0);
    transition: background 0.3s ease;
}

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

.btn--primary {
    background-color: var(--color-secondary);
    color: var(--color-white);
    border-color: var(--color-secondary);
}

.btn--primary:hover {
    background-color: var(--color-secondary-hover);
    border-color: var(--color-secondary-hover);
    color: var(--color-white);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 30px rgba(141, 15, 34, 0.4);
}

.btn--primary:active {
    transform: translateY(-1px) scale(1);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn--secondary:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn--outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--outline:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 30px rgba(11, 48, 65, 0.3);
}

/* Link Hover Animation */
a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: width 0.3s ease;
}

a:hover {
    color: var(--color-secondary-hover);
}

a:hover::after {
    width: 100%;
}

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

/* Enhanced Card Hover Effects */
.card--interactive {
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.card--interactive::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.card--interactive:hover::before {
    left: 100%;
}

/* Icon Float Animation */
.card__icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover .card__icon {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 30px rgba(11, 48, 65, 0.3);
}

.card__icon svg {
    width: 32px;
    height: 32px;
    fill: var(--color-white);
}

.card__title {
    font-size: 20px;
    margin-bottom: var(--spacing-xs);
}

.card__text {
    color: var(--color-text-light);
}

/* Grid */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

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

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Responsive */
@media (max-width: 1024px) {
    :root {
        --font-size-h1: 42px;
        --font-size-h2: 32px;
        --spacing-xl: 60px;
    }

    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-h1: 36px;
        --font-size-h2: 28px;
        --font-size-h3: 20px;
        --spacing-xl: 48px;
        --spacing-lg: 32px;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .btn {
        padding: 14px 24px;
        font-size: 15px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Floating Animation */
@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* Pulse Animation */
@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

/* Pulse Glow */
@keyframes pulseGlow {

    0%,
    100% {
        box-shadow: 0 0 5px rgba(141, 15, 34, 0.3);
    }

    50% {
        box-shadow: 0 0 20px rgba(141, 15, 34, 0.6);
    }
}

/* Slide In Left */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Slide In Right */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scale In */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Rotate */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Bounce */
@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    25% {
        transform: translateY(-5px);
    }

    50% {
        transform: translateY(0);
    }

    75% {
        transform: translateY(-3px);
    }
}

/* Wave */
@keyframes wave {

    0%,
    100% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(10deg);
    }

    75% {
        transform: rotate(-10deg);
    }
}

/* Shimmer */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

/* Gradient Shift */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* Smooth Reveal */
@keyframes revealUp {
    from {
        clip-path: inset(0 0 100% 0);
    }

    to {
        clip-path: inset(0 0 0 0);
    }
}

@keyframes revealLeft {
    from {
        clip-path: inset(0 0 0 100%);
    }

    to {
        clip-path: inset(0 0 0 0);
    }
}

/* Skew In */
@keyframes skewIn {
    from {
        opacity: 0;
        transform: skewX(20deg);
    }

    to {
        opacity: 1;
        transform: skewX(0deg);
    }
}

/* Elastic Bounce */
@keyframes elasticBounce {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }

    50% {
        opacity: 1;
        transform: scale(1.05);
    }

    70% {
        transform: scale(0.9);
    }

    100% {
        transform: scale(1);
    }
}

/* Animation Classes */
.animate-fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-slide-left {
    animation: slideInLeft 0.6s ease forwards;
}

.animate-slide-right {
    animation: slideInRight 0.6s ease forwards;
}

.animate-scale-in {
    animation: scaleIn 0.5s ease forwards;
}

.animate-bounce {
    animation: bounce 1s ease-in-out infinite;
}

.animate-elastic {
    animation: elasticBounce 0.8s ease forwards;
}

.animate-shimmer {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

.animate-gradient {
    background-size: 200% 200%;
    animation: gradientShift 5s ease infinite;
}

.animate-reveal {
    animation: revealUp 0.8s ease forwards;
}

.animate-wave {
    animation: wave 1s ease-in-out;
    transform-origin: bottom center;
}

/* Animation Delays */
.animate-delay-1 {
    animation-delay: 0.1s;
}

.animate-delay-2 {
    animation-delay: 0.2s;
}

.animate-delay-3 {
    animation-delay: 0.3s;
}

.animate-delay-4 {
    animation-delay: 0.4s;
}

.animate-delay-5 {
    animation-delay: 0.5s;
}

.animate-delay-6 {
    animation-delay: 0.6s;
}

/* Initial State for Scroll Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll-slide-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll-slide-left.animate-in {
    opacity: 1;
    transform: translateX(0);
}

.animate-on-scroll-slide-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll-slide-right.animate-in {
    opacity: 1;
    transform: translateX(0);
}

.animate-on-scroll-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll-scale.animate-in {
    opacity: 1;
    transform: scale(1);
}

/* Hover Effects with Transitions */
.card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-white {
    color: var(--color-white);
}

.mb-0 {
    margin-bottom: 0;
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}