/* ==========================================================================
   CSS CUSTOM PROPERTIES (Color Palette & Variables)
   ========================================================================== */
:root {
    /* Slate Scale */
    --color-slate-50: #f8fafc;
    --color-slate-100: #f1f5f9;
    --color-slate-200: #e2e8f0;
    --color-slate-300: #cbd5e1;
    --color-slate-400: #94a3b8;
    --color-slate-500: #64748b;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-800: #1e293b;
    --color-slate-900: #0f172a;

    /* Emerald Scale */
    --color-emerald-400: #34d399;
    --color-emerald-500: #10b981;
    --color-emerald-600: #059669;
    --color-emerald-700: #047857;

    /* Other Colors */
    --color-blue-500: #3b82f6;
    --color-purple-500: #a855f7;
    --color-green-500: #22c55e;
    --color-yellow-400: #facc15;
    
    /* Competence Card Colors */
    --color-project-mgmt: #FBC02D;
    --color-parking-tech: #00599C;
    --color-digital-strat: #386641;
    --color-security-ops: #E07A5F;

    --transition-speed: 0.3s;
    --border-radius-lg: 0.5rem;
    --border-radius-2xl: 1rem;
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* ==========================================================================
   TYPOGRAPHY (@font-face)
   ========================================================================== */
/* outfit-regular - latin */
@font-face {
  font-display: swap;
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 400;
  src: url('fonts/outfit-v15-latin-regular.woff2') format('woff2');
}
/* outfit-500 - latin */
@font-face {
  font-display: swap;
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 500;
  src: url('fonts/outfit-v15-latin-500.woff2') format('woff2');
}
/* outfit-700 - latin */
@font-face {
  font-display: swap;
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 700;
  src: url('fonts/outfit-v15-latin-700.woff2') format('woff2');
}

/* ==========================================================================
   CSS RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    margin: 0;
    color: var(--color-slate-800);
    background-color: var(--color-slate-50);
    background-image: url('../background-pattern.webp');
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center center;
    transition: background-color var(--transition-speed), color var(--transition-speed);
    min-height: 100vh;
    scroll-behavior: smooth;
}

.no-webp body {
    background-image: url('../background-pattern.jpeg');
}

/* Dark Mode Overrides for Body */
html.dark body {
    color: var(--color-slate-100);
    background-color: var(--color-slate-900);
    background-blend-mode: multiply;
}

h1, h2, h3, h4 {
    margin: 0;
}

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    padding: 0;
}

/* ==========================================================================
   LAYOUT COMPONENTS
   ========================================================================== */
.container {
    max-width: 64rem; /* 1024px, same as max-w-5xl */
    margin-left: auto;
    margin-right: auto;
    padding: 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 2rem;
    }
}

.card {
    background-color: #fff;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: background-color var(--transition-speed);
    box-shadow: var(--shadow-lg);
}

html.dark .card {
    background-color: var(--color-slate-800);
}

.profile-section {
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .profile-section {
        flex-direction: row;
    }
}

.sidebar {
    position: relative;
    background-color: var(--color-slate-800);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed);
}

#sidebar-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.18;
    pointer-events: none;
    z-index: 0;
}

html.dark .sidebar {
    background-color: var(--color-slate-950, #020617);
}

@media (min-width: 768px) {
    .sidebar {
        width: 33.333333%;
    }
}

.content {
    padding: 2rem;
}

@media (min-width: 768px) {
    .content {
        width: 66.666667%;
    }
}

/* ==========================================================================
   PROFILE DETAILS
   ========================================================================== */
.profile-img {
    border-radius: 9999px;
    width: 10rem;
    height: 10rem;
    object-fit: cover;
    border: 4px solid var(--color-slate-500);
    box-shadow: 0 0 10px 2px rgba(203, 213, 225, 0.4);
    transition: border-color var(--transition-speed);
    position: relative;
    z-index: 1;
}

html.dark .profile-img {
    border-color: var(--color-slate-600);
}

.name {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-slate-900);
    transition: color var(--transition-speed);
}

html.dark .name {
    color: #fff;
}

.job-title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-top: 0.5rem;
    color: var(--color-slate-600);
    transition: color var(--transition-speed);
}

html.dark .job-title {
    color: var(--color-slate-300);
}

.bio {
    margin-top: 1rem;
    color: var(--color-slate-700);
    transition: color var(--transition-speed);
}

html.dark .bio {
    color: var(--color-slate-200);
}

/* ==========================================================================
   BUTTONS & LINKS
   ========================================================================== */
.contact-links {
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-style: normal;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--color-slate-100);
    color: var(--color-slate-800);
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    transition: all var(--transition-speed);
    font-size: 0.875rem;
}

html.dark .btn {
    background-color: var(--color-slate-700);
    color: var(--color-slate-100);
}

.contact-links .btn-phone:hover {
    background-color: var(--color-emerald-600);
    color: #fff;
}

html.dark .contact-links .btn-phone:hover {
    background-color: var(--color-emerald-500);
}

.contact-links .btn-email:hover {
    background-color: var(--color-blue-500);
    color: #fff;
}

.contact-links .btn-calendar:hover {
    background-color: var(--color-purple-500);
    color: #fff;
}

.contact-links .btn-whatsapp:hover {
    background-color: var(--color-green-500);
    color: #fff;
}

.contact-links .btn-vcard:hover {
    background-color: var(--color-yellow-400);
    color: var(--color-slate-900);
}

/* ==========================================================================
   ACCORDION
   ========================================================================== */
.accordion-item {
    background-color: #fff;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-lg);
    transition: background-color var(--transition-speed);
    margin-top: 2rem;
}

html.dark .accordion-item {
    background-color: var(--color-slate-800);
}

.accordion-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    text-align: left;
}

.accordion-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-slate-900);
    transition: color var(--transition-speed);
}

html.dark .accordion-header h2 {
    color: #fff;
}

.accordion-icon {
    font-size: 1rem;
    color: var(--color-slate-900);
    transition: transform 0.3s ease-in-out, color var(--transition-speed);
}

html.dark .accordion-icon {
    color: #fff;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-in-out;
}

.accordion-content-inner {
    padding: 1.5rem;
    padding-top: 0;
}

/* ==========================================================================
   FLIP CARDS (Competences)
   ========================================================================== */
.competence-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

@media (min-width: 768px) {
    .competence-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.flip-card-container {
    perspective: 1000px;
    aspect-ratio: 1 / 1;
    cursor: pointer;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.flip-card-container.is-flipped .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    padding: 1rem;
    text-align: center;
}

.flip-card-front {
    background-color: var(--color-slate-50);
    border: 2px solid transparent;
    transition: all var(--transition-speed);
}

html.dark .flip-card-front {
    background-color: var(--color-slate-700);
}

.flip-card-back {
    transform: rotateY(180deg);
    color: #fff;
}

.flip-card-back p {
    font-size: 0.875rem;
    margin: 0;
}

.flip-card-back a {
    margin-top: 0.5rem;
    opacity: 0.8;
    transition: opacity var(--transition-speed);
}

.flip-card-back a:hover {
    opacity: 1;
}

/* Specific Card Styles */
.card-pm .flip-card-front:hover { background-color: #FEF9E7; border-color: var(--color-project-mgmt); }
html.dark .card-pm .flip-card-front:hover { background-color: rgba(251, 192, 45, 0.1); }
.card-pm .flip-card-back { background-color: var(--color-project-mgmt); color: #000; }
.card-pm .flip-card-back a { color: rgba(0,0,0,0.8); }
.card-pm .flip-card-back a:hover { color: #000; }
.card-pm:hover .icon-glow { text-shadow: 0 0 10px var(--color-project-mgmt); color: var(--color-project-mgmt); }
.card-pm:hover h3 { color: #B48100; }
html.dark .card-pm:hover h3 { color: var(--color-project-mgmt); }

.card-parking .flip-card-front:hover { background-color: #E6F0F7; border-color: var(--color-parking-tech); }
html.dark .card-parking .flip-card-front:hover { background-color: rgba(0, 89, 156, 0.1); }
.card-parking .flip-card-back { background-color: var(--color-parking-tech); }
.card-parking:hover .icon-glow { text-shadow: 0 0 10px var(--color-parking-tech); color: var(--color-parking-tech); }
.card-parking:hover h3 { color: #003C68; }
html.dark .card-parking:hover h3 { color: var(--color-parking-tech); }

.card-digital .flip-card-front:hover { background-color: #EBF3EC; border-color: var(--color-digital-strat); }
html.dark .card-digital .flip-card-front:hover { background-color: rgba(56, 102, 65, 0.1); }
.card-digital .flip-card-back { background-color: var(--color-digital-strat); }
.card-digital:hover .icon-glow { text-shadow: 0 0 10px var(--color-digital-strat); color: var(--color-digital-strat); }
.card-digital:hover h3 { color: #2A482E; }
html.dark .card-digital:hover h3 { color: var(--color-digital-strat); }

.card-security .flip-card-front:hover { background-color: #FBEAE6; border-color: var(--color-security-ops); }
html.dark .card-security .flip-card-front:hover { background-color: rgba(224, 122, 95, 0.1); }
.card-security .flip-card-back { background-color: var(--color-security-ops); }
.card-security:hover .icon-glow { text-shadow: 0 0 10px var(--color-security-ops); color: var(--color-security-ops); }
.card-security:hover h3 { color: #B95B43; }
html.dark .card-security:hover h3 { color: var(--color-security-ops); }

.icon-glow {
    font-size: 3rem;
    margin-bottom: 0.75rem;
    color: var(--color-slate-600);
    transition: all var(--transition-speed);
}

html.dark .icon-glow {
    color: var(--color-slate-300);
}

.flip-card-front h3 {
    font-weight: 700;
    color: var(--color-slate-800);
    transition: color var(--transition-speed);
}

html.dark .flip-card-front h3 {
    color: var(--color-slate-100);
}

/* ==========================================================================
   DATENSCHUTZ & IMPRESSUM
   ========================================================================== */
.legal-text {
    font-size: 0.875rem;
    color: var(--color-slate-600);
    transition: color var(--transition-speed);
}

html.dark .legal-text {
    color: var(--color-slate-300);
}

.legal-text p {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.legal-text h3 {
    font-weight: 700;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.legal-text ul {
    margin-top: 0;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
}

.legal-text li {
    margin-bottom: 0.5rem;
}

.btn-small {
    margin-top: 0.5rem;
    background-color: var(--color-slate-200);
    color: var(--color-slate-800);
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: background-color var(--transition-speed);
}

.btn-small:hover {
    background-color: var(--color-slate-300);
}

html.dark .btn-small {
    background-color: var(--color-slate-700);
    color: var(--color-slate-100);
}

html.dark .btn-small:hover {
    background-color: var(--color-slate-600);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
    text-align: center;
    padding: 1.5rem;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--color-slate-500);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background-color: #fff;
    color: var(--color-slate-800);
    padding: 0.75rem;
    border-radius: 9999px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-speed);
}

html.dark .theme-toggle {
    background-color: var(--color-slate-800);
    color: var(--color-yellow-400);
}

.theme-toggle:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   COOKIE BANNER
   ========================================================================== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: var(--color-slate-800);
    color: #fff;
    padding: 1rem;
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
    border-top: 1px solid var(--color-slate-700);
    transition: background-color var(--transition-speed);
}

html.dark .cookie-banner {
    background-color: var(--color-slate-900);
    border-top-color: var(--color-slate-800);
}

.cookie-container {
    max-width: 64rem;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .cookie-container {
        padding: 0 2rem;
    }
}

.cookie-flex {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

@media (min-width: 768px) {
    .cookie-flex {
        flex-direction: row;
        text-align: left;
    }
}

.cookie-text {
    font-size: 0.875rem;
    color: var(--color-slate-300);
    text-align: center;
}

@media (min-width: 768px) {
    .cookie-text {
        text-align: left;
    }
}

.cookie-text a {
    text-decoration: underline;
    color: var(--color-emerald-400);
}

.cookie-text a:hover {
    color: var(--color-emerald-300);
}

.cookie-actions {
    display: flex;
    gap: 0.75rem;
    flex-shrink: 0;
}

.btn-cookie-dismiss {
    background-color: var(--color-slate-700);
    color: #fff;
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    font-weight: 600;
    font-size: 0.875rem;
}

.btn-cookie-dismiss:hover {
    background-color: var(--color-slate-600);
}

.btn-cookie-accept {
    background-color: var(--color-emerald-600);
    color: #fff;
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 0.875rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.btn-cookie-accept:hover {
    background-color: var(--color-emerald-700);
}

/* Utilities */
.hidden {
    display: none;
}